diff --git a/docs/source/Plugin/P092.rst b/docs/source/Plugin/P092.rst
new file mode 100644
index 000000000..1b87fd993
--- /dev/null
+++ b/docs/source/Plugin/P092.rst
@@ -0,0 +1,36 @@
+.. include:: ../Plugin/_plugin_substitutions_p09x.repl
+.. _P092_page:
+
+|P092_typename|
+==================================================
+
+|P092_shortinfo|
+
+Plugin details
+--------------
+
+Type: |P092_type|
+
+Name: |P092_name|
+
+Status: |P092_status|
+
+GitHub: |P092_github|_
+
+Maintainer: |P092_maintainer|
+
+Used libraries: |P092_usedlibraries|
+
+Supported hardware
+------------------
+
+|P092_usedby|
+
+Change log
+----------
+
+.. versionadded:: 1.0
+  ...
+
+  |added|
+  Initial release version.
diff --git a/docs/source/Plugin/P092_12V_Wiring.PNG b/docs/source/Plugin/P092_12V_Wiring.PNG
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diff --git a/docs/source/Plugin/P092_24V_Wiring.PNG b/docs/source/Plugin/P092_24V_Wiring.PNG
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index 000000000..360ed4e4a
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diff --git a/docs/source/Plugin/P092_DL_bus_databyte.png b/docs/source/Plugin/P092_DL_bus_databyte.png
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index 000000000..0a456c607
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diff --git a/docs/source/Plugin/P092_DL_bus_dataframe.png b/docs/source/Plugin/P092_DL_bus_dataframe.png
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index 000000000..03bdf8c1e
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diff --git a/docs/source/Plugin/P092_DL_bus_dataframelog.png b/docs/source/Plugin/P092_DL_bus_dataframelog.png
new file mode 100644
index 000000000..64a7e3217
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diff --git a/docs/source/Plugin/P092_DL_bus_displayclock.png b/docs/source/Plugin/P092_DL_bus_displayclock.png
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index 000000000..1bf4d2133
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diff --git a/docs/source/Plugin/P092_DL_bus_outputwiring.png b/docs/source/Plugin/P092_DL_bus_outputwiring.png
new file mode 100644
index 000000000..e6f6d594b
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diff --git a/docs/source/Plugin/P092_DLbus.rst b/docs/source/Plugin/P092_DLbus.rst
new file mode 100644
index 000000000..232419bd1
--- /dev/null
+++ b/docs/source/Plugin/P092_DLbus.rst
@@ -0,0 +1,50 @@
+.. include:: ../Plugin/_plugin_substitutions_p09x.repl
+.. _P092_DLbus_page:
+
+DL bus
+======
+
+|P092_typename|
+|P092_status|
+
+Introduction
+------------
+
+The DL-Bus is used in control units e.g. sold by `Technische Alternative <http://www.ta.co.at/>`_.
+The DL-Bus serves as a bus line for various external sensors and modules.
+The DL-Bus is a bidirectional data line and only compatible with products of Technische Alternative.
+
+The data transmission looks as follows:
+ * In an infinite loop, a logging data frame is created by the control one after the others on the data line.
+
+Up to 4 sensor measured value queries (master/slave) can be made between the individual logging data frames on the DL bus.
+ * So that the beginning of a data frame can be detected, a SYNC of 16 high bits is sent before the first data byte.
+ * The data transmission is carried out as Manchester code (EXOR linked) with a display clock of 50 or 488Hz (depending on control type).
+
+This is necessary to ensure the supply voltage of the logger and DL sensors from the data signal.
+If the receiver is synchronized to the display clock, the correct bit value appears always during the second half period of the data bit (inverted in the first half period).
+
+Wiring
+------
+
+The DL-Bus consists of 2 wires: DL and GND (sensor ground).
+The power supply for the DL-Bus sensors is supplied via the DL-Bus itself.
+Some DL-Bus devices can/must be powered via a 12V source, e.g. that of the CAN bus (this is explicitly noted in the operating manual of that sensor).
+The cable routing can be star-shaped or serial (from one device to the next).
+Any cable with a cross-section of 0.75 mm2 up to a maximum length of 30 m can be used as a data cable.
+Over 30 m, the use of shielded cables is recommended, which increases the permissible length of the cable to 100 m.
+
+Protocol
+--------
+
+Transmission of a data byte
+.. image:: P092_DL_bus_databyte.png
+
+Transmission of a data frame
+.. image:: P092_DL_bus_dataframe.png
+
+Data frame on the DL bus
+.. image:: P092_DL_bus_dataframelog.png
+
+Display clock
+.. image:: P092_DL_bus_displayclock.png
diff --git a/docs/source/Plugin/P092_ESR21.PNG b/docs/source/Plugin/P092_ESR21.PNG
new file mode 100644
index 000000000..0da32e442
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diff --git a/docs/source/Plugin/P092_ESR21.rst b/docs/source/Plugin/P092_ESR21.rst
new file mode 100644
index 000000000..ba2af9a8c
--- /dev/null
+++ b/docs/source/Plugin/P092_ESR21.rst
@@ -0,0 +1,76 @@
+.. include:: ../Plugin/_plugin_substitutions_p09x.repl
+.. _P092_ESR21_page:
+
+ESR21
+=====
+
+|P092_typename|
+|P092_status|
+
+Introduction
+------------
+
+The ESR21 unit is a simple solar control.
+The ESR21 unit is a differential control that can be used in many ways
+
+The DL bus runs at 12 volts.
+The data frame consist of 30 bytes (excluding sync and CRC).
+The data are transmitted @ 488Hz, therefore the transmission of one data set takes about 0.67 seconds.
+.. image:: P092_ESR21.png
+
+Wiring
+------
+
+.. image:: P092_12V_Wiring.png
+
+Protocol
+--------
+
+.. image:: P092_ESR21_Protocol.png
+
+Setup
+-----
+
+.. note:: A new device task must be created for each value to be read from the DL bus!
+
+.. image:: P092_Setup.png
+
+Task settings
+~~~~~~~~~~~~~
+
+* **Device**: Heating - DL-Bus (Technische Alternative)
+* **Name**: Name of the task (example name **ValueN**, where N is a number).
+* **Enable**: Should the task be enabled or not
+
+Sensor
+^^^^^^
+
+* **1st GPIO**: DL bus input e.g. **GPIO 14 (D5)**
+* **DL-Bus Type**: **ESR21**
+
+.. note:: The settings for **1st GPIO** and **DL-Bus Type** must be the same for all used DL bus tasks!
+
+Inputs
+^^^^^^
+
+.. note:: The description of the **Frame data** and the related **Frame bytes** can be found in the section **Protocol**!
+
+.. csv-table::
+  :header: "Frame data", "Frame bytes", "Value", "Index", "Decimals"
+  :widths: 16, 8, 8, 5, 5
+
+  "Sensor1 ... Sensor3", "3 ... 8", "Sensor", "1 - 3", "1"
+  "Ext1 ... Ext6", "9 ... 20", "Ext. Sensor", "1 - 6", "1"
+  "Output byte", "21", "Digital Output", "", "0"
+  "Speed step", "22", "Speed step", "", "0"
+  "Analog output", "23", "Analog output", "", "1"
+  "Current power", "25,26", "Heat power [kW]", "", "1"
+  "Heat quantity", "27 ... 30", "Heat meter [MWh]", "", "4"
+
+Data acquisition
+^^^^^^^^^^^^^^^^
+
+* **Send to controller** 1..3: Check which controller (if any) you want to publish to. All or no controller can be used.
+* **Interval**: How often should the task publish its value (10..60 seconds is normal).
+
+.. note:: Intervall not less than **10 seconds**! The reading of the DL bus happens twice per intervall.
diff --git a/docs/source/Plugin/P092_ESR21_Protocol.PNG b/docs/source/Plugin/P092_ESR21_Protocol.PNG
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index 000000000..8ec2c9055
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diff --git a/docs/source/Plugin/P092_Setup.png b/docs/source/Plugin/P092_Setup.png
new file mode 100644
index 000000000..a543b6335
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diff --git a/docs/source/Plugin/P092_UVR1611.png b/docs/source/Plugin/P092_UVR1611.png
new file mode 100644
index 000000000..d9cdabfa0
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diff --git a/docs/source/Plugin/P092_UVR1611.rst b/docs/source/Plugin/P092_UVR1611.rst
new file mode 100644
index 000000000..efd456823
--- /dev/null
+++ b/docs/source/Plugin/P092_UVR1611.rst
@@ -0,0 +1,80 @@
+.. include:: ../Plugin/_plugin_substitutions_p09x.repl
+.. _P092_UVR1611_page:
+
+UVR1611
+=======
+
+|P092_typename|
+|P092_status|
+
+Introduction
+------------
+
+The UVR1611 unit is a freely programmable universal control system.
+The UVR1611 universal controller can be freely programmed using function modules to match any system configuration for heating room management.
+
+The DL bus runs at 12 volts.
+The data frame consist of 63 bytes (excluding sync and CRC).
+The data are transmitted @ 488Hz, therefore the transmission of one data set takes about 1.4 seconds.
+.. image:: P092_UVR1611.png
+
+Wiring
+------
+
+.. image:: P092_12V_Wiring.png
+
+Protocol
+--------
+
+.. image:: P092_UVR1611_Protocol.png
+
+Setup
+-----
+
+.. note:: A new device task must be created for each value to be read from the DL bus!
+
+.. image:: P092_Setup.png
+
+Task settings
+~~~~~~~~~~~~~
+
+* **Device**: Heating - DL-Bus (Technische Alternative)
+* **Name**: Name of the task (example name **ValueN**, where N is a number).
+* **Enable**: Should the task be enabled or not
+
+Sensor
+^^^^^^
+
+* **1st GPIO**: DL bus input e.g. **GPIO 14 (D5)**
+* **DL-Bus Type**: **UVR1611**
+
+.. note:: The settings for **1st GPIO** and **DL-Bus Type** must be the same for all used DL bus tasks!
+
+Inputs
+^^^^^^
+
+.. note:: The description of the **Frame data** and the related **Frame bytes** can be found in the section **Protocol**!
+
+.. csv-table::
+  :header: "Frame data", "Frame bytes", "Value", "Index", "Decimals"
+  :widths: 16, 8, 8, 5, 5
+
+  "Sensor1 ... Sensor16", "9 ... 40", "Sensor", "1 - 16", "1"
+  "Output A1 ... A7", "41", "Digital Output", "1 - 7", "0"
+  "Output A9 ... A13", "42", "Digital Output", "9 - 13", "0"
+  "Speed step A1", "43", "Speed step", "1", "0"
+  "Speed step A2", "44", "Speed step", "2", "0"
+  "Speed step A6", "45", "Speed step", "3", "0"
+  "Speed step A7", "46", "Speed step", "4", "0"
+  "Current power 1", "48 ... 51", "Heat power [kW]", "1", "2"
+  "Current power 2", "56 ... 59", "Heat power [kW]", "2", "2"
+  "Heat quantity 1", "52 ... 55", "Heat meter [MWh]", "1", "4"
+  "Heat quantity 2", "60 ... 64", "Heat meter [MWh]", "2", "4"
+
+Data acquisition
+^^^^^^^^^^^^^^^^
+
+* **Send to controller** 1..3: Check which controller (if any) you want to publish to. All or no controller can be used.
+* **Interval**: How often should the task publish its value (10..60 seconds is normal).
+
+.. note:: Intervall not less than **10 seconds**! The reading of the DL bus happens twice per intervall.
diff --git a/docs/source/Plugin/P092_UVR1611_Protocol.png b/docs/source/Plugin/P092_UVR1611_Protocol.png
new file mode 100644
index 000000000..498b08584
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diff --git a/docs/source/Plugin/P092_UVR31.PNG b/docs/source/Plugin/P092_UVR31.PNG
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index 000000000..9365ba1a1
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diff --git a/docs/source/Plugin/P092_UVR31.rst b/docs/source/Plugin/P092_UVR31.rst
new file mode 100644
index 000000000..b7748a8f7
--- /dev/null
+++ b/docs/source/Plugin/P092_UVR31.rst
@@ -0,0 +1,71 @@
+.. include:: ../Plugin/_plugin_substitutions_p09x.repl
+.. _P092_UVR31_page:
+
+UVR31
+=====
+
+|P092_typename|
+|P092_status|
+
+Introduction
+------------
+
+The UVR31 unit is a single-circuit universal control system.
+The UVR31 unit is designed for simple solar installations and heating systems (storage charging, domestic hot water preparation)
+
+The DL bus runs at 24 volts.
+The data frame consist of 8 bytes (excluding sync).
+The data are transmitted @ 50Hz, therefore the transmission of one data set takes about 1.92 seconds.
+.. image:: P092_UVR31.png
+
+Wiring
+------
+
+.. image:: P092_24V_Wiring.png
+
+Protocol
+--------
+
+.. image:: P092_UVR31_Protocol.png
+
+Setup
+-----
+
+.. note:: A new device task must be created for each value to be read from the DL bus!
+
+.. image:: P092_Setup.png
+
+Task settings
+~~~~~~~~~~~~~
+
+* **Device**: Heating - DL-Bus (Technische Alternative)
+* **Name**: Name of the task (example name **ValueN**, where N is a number).
+* **Enable**: Should the task be enabled or not
+
+Sensor
+^^^^^^
+
+* **1st GPIO**: DL bus input e.g. **GPIO 14 (D5)**
+* **DL-Bus Type**: **UVR31**
+
+.. note:: The settings for **1st GPIO** and **DL-Bus Type** must be the same for all used DL bus tasks!
+
+Inputs
+^^^^^^
+
+.. note:: The description of the **Frame data** and the related **Frame bytes** can be found in the section **Protocol**!
+
+.. csv-table::
+  :header: "Frame data", "Frame bytes", "Value", "Index", "Decimals"
+  :widths: 16, 8, 8, 5, 5
+
+  "Temp1 ... Temp3", "2 ... 7", "Sensor", "1 - 3", "1"
+  "Output byte", "8", "Digital Output", "", "0"
+
+Data acquisition
+^^^^^^^^^^^^^^^^
+
+* **Send to controller** 1..3: Check which controller (if any) you want to publish to. All or no controller can be used.
+* **Interval**: How often should the task publish its value (20..60 seconds is normal).
+
+.. note:: Intervall not less than **20 seconds**! The reading of the DL bus happens twice per intervall.
diff --git a/docs/source/Plugin/P092_UVR31_Protocol.PNG b/docs/source/Plugin/P092_UVR31_Protocol.PNG
new file mode 100644
index 000000000..85d6eab05
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diff --git a/docs/source/Plugin/P092_UVR61-3.png b/docs/source/Plugin/P092_UVR61-3.png
new file mode 100644
index 000000000..830c22b39
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diff --git a/docs/source/Plugin/P092_UVR61-3.rst b/docs/source/Plugin/P092_UVR61-3.rst
new file mode 100644
index 000000000..1995671ac
--- /dev/null
+++ b/docs/source/Plugin/P092_UVR61-3.rst
@@ -0,0 +1,76 @@
+.. include:: ../Plugin/_plugin_substitutions_p09x.repl
+.. _P092_UVR61-3_page:
+
+UVR61-3
+=======
+
+|P092_typename|
+|P092_status|
+
+Introduction
+------------
+
+The UVR61-3 unit is a three-circuit universal control system.
+The UVR61-3 unit is designed for an energy-saving and cost-effective drying of cellars and other parts of buildings by means of fan control.
+The UVR61-3 three-circuit controllers has various thermostat, differential temperature and speed control functions for use in solar and heating systems, too.
+
+The DL bus runs at 12 volts.
+The data frame consist of 34 bytes (excluding sync and CRC).
+The data are transmitted @ 488Hz, therefore the transmission of one data set takes about 0.8 seconds.
+.. image:: P092_UVR61-3.png
+
+Wiring
+------
+
+.. image:: P092_12V_Wiring.png
+
+Protocol
+--------
+
+.. image:: P092_UVR61-3_Protocol.png
+
+Setup
+-----
+
+.. note:: A new device task must be created for each value to be read from the DL bus!
+
+.. image:: P092_Setup.png
+
+Task settings
+~~~~~~~~~~~~~
+
+* **Device**: Heating - DL-Bus (Technische Alternative)
+* **Name**: Name of the task (example name **ValueN**, where N is a number).
+* **Enable**: Should the task be enabled or not
+
+Sensor
+^^^^^^
+
+* **1st GPIO**: DL bus input e.g. **GPIO 14 (D5)**
+* **DL-Bus Type**: **UVR61-3 v8.2**
+
+.. note:: The settings for **1st GPIO** and **DL-Bus Type** must be the same for all used DL bus tasks!
+
+Inputs
+^^^^^^
+
+.. note:: The description of the **Frame data** and the related **Frame bytes** can be found in the section **Protocol**!
+
+.. csv-table::
+  :header: "Frame data", "Frame bytes", "Value", "Index", "Decimals"
+  :widths: 16, 8, 8, 5, 5
+
+  "Sensor1 ... Sensor6", "9 ... 20", "Sensor", "1 - 6", "1"
+  "Output A1 ... A3", "21", "Digital Output", "1 - 3", "0"
+  "Speed step", "22", "Speed step", "", "0"
+  "Analog output", "23", "Analog output", "", "1"
+  "Current power", "27,28", "Heat power [kW]", "", "1"
+  "Heat quantity", "29 ... 34", "Heat meter [MWh]", "", "4"
+
+Data acquisition
+^^^^^^^^^^^^^^^^
+
+* **Send to controller** 1..3: Check which controller (if any) you want to publish to. All or no controller can be used.
+* **Interval**: How often should the task publish its value (10..60 seconds is normal).
+
+.. note:: Intervall not less than **10 seconds**! The reading of the DL bus happens twice per intervall.
diff --git a/docs/source/Plugin/P092_UVR61-3_Protocol.png b/docs/source/Plugin/P092_UVR61-3_Protocol.png
new file mode 100644
index 000000000..359648f8d
Binary files /dev/null and b/docs/source/Plugin/P092_UVR61-3_Protocol.png differ
diff --git a/docs/source/Plugin/_Plugin.rst b/docs/source/Plugin/_Plugin.rst
index d86d6af7e..212b7694e 100644
--- a/docs/source/Plugin/_Plugin.rst
+++ b/docs/source/Plugin/_Plugin.rst
@@ -114,6 +114,7 @@ There's three different released versions of ESP Easy:
    ":ref:`P088_page`","|P088_status|","P088"
    ":ref:`P089_page`","|P089_status|","P089"
    ":ref:`P090_page`","|P090_status|","P090"
+   ":ref:`P092_page`","|P092_status|","P092"
 
 
 Internal GPIO handling
diff --git a/docs/source/Plugin/_plugin_substitutions_p09x.repl b/docs/source/Plugin/_plugin_substitutions_p09x.repl
index f9d9fba8c..cb74d283e 100644
--- a/docs/source/Plugin/_plugin_substitutions_p09x.repl
+++ b/docs/source/Plugin/_plugin_substitutions_p09x.repl
@@ -8,4 +8,15 @@
 .. |P090_shortinfo| replace:: `.`
 .. |P090_maintainer| replace:: `TD-er`
 .. |P090_compileinfo| replace:: `.`
-.. |P090_usedlibraries| replace:: `.`
\ No newline at end of file
+.. |P090_usedlibraries| replace:: `.`
+.. |P092_name| replace:: :cyan:`DL-Bus (Technische Alternative)`
+.. |P092_type| replace:: :cyan:`Heating`
+.. |P092_typename| replace:: :cyan:`Heating - DL-Bus (Technische Alternative)`
+.. |P092_status| replace:: :yellow:`TESTING`
+.. |P092_github| replace:: P092_DLbus.ino
+.. _P092_github: https://github.com/letscontrolit/ESPEasy/blob/mega/src/_P092_DLbus.ino
+.. |P092_usedby| replace:: `.`
+.. |P092_shortinfo| replace:: `.`
+.. |P092_maintainer| replace:: `.`
+.. |P092_compileinfo| replace:: `.`
+.. |P092_usedlibraries| replace:: `.`
diff --git a/lib/DLBus/DLBus.cpp b/lib/DLBus/DLBus.cpp
new file mode 100644
index 000000000..e041af332
--- /dev/null
+++ b/lib/DLBus/DLBus.cpp
@@ -0,0 +1,372 @@
+#include "DLBus.h"
+//
+// DLBus reads and decodes the DL-Bus.
+// The DL-Bus is used in heating control units e.g. sold by Technische Alternative (www.ta.co.at).
+// Author uwekaditz
+
+//#define DLbus_DEBUG
+
+// Flags for pulse width (bit 0 is the content!)
+#define DLbus_FlagSingleWidth	                0x02
+#define DLbus_FlagDoubleWidth	                0x04
+#define DLbus_FlagShorterThanSingleWidth      0x10
+#define DLbus_FlagBetweenDoubleSingleWidth    0x20
+#define DLbus_FlagLongerThanDoubleWidth       0x40
+#define DLbus_FlagLongerThanTwiceDoubleWidth  0x80
+#define DLbus_FlagsWrongTiming                (DLbus_FlagLongerThanTwiceDoubleWidth | DLbus_FlagLongerThanDoubleWidth | DLbus_FlagBetweenDoubleSingleWidth | DLbus_FlagShorterThanSingleWidth)
+
+extern long usecPassedSince(unsigned long timestamp) ICACHE_RAM_ATTR;
+extern void addToLog(byte loglevel, const String& string);
+
+//#define LOG_LEVEL_ERROR                     1
+#define LOG_LEVEL_INFO                      2
+#ifndef F
+// Create a no-op F() macro so the code base still compiles outside of the
+// Arduino framework. Thus we can safely use the Arduino 'F()' macro through-out
+// the code base. That macro stores constants in Flash (PROGMEM) memory.
+// See: https://github.com/crankyoldgit/IRremoteESP8266/issues/667
+	#define F(x) x
+#endif  // F
+
+// Helper for ISR call
+DLBus* DLBus::__instance = nullptr;
+volatile  static uint8_t* ISR_PtrChangeBitStream = nullptr;		// pointer to received bit change stream
+
+DLBus::DLBus()
+{
+		if (__instance == nullptr)
+		{
+			__instance = this;
+      ISR_PtrChangeBitStream = DLbus_ChangeBitStream;
+	  	addToLog(LOG_LEVEL_INFO, F("Class DLBus created"));
+		}
+}
+
+DLBus::~DLBus()
+{
+		if (__instance == this)
+		{
+			__instance = nullptr;
+			ISR_PtrChangeBitStream = nullptr;
+			addToLog(LOG_LEVEL_INFO, F("Class DLBus destroyed"));
+		}
+}
+
+void DLBus::AddToInfoLog(const String& string)
+{
+	if ((IsLogLevelInfo) && (LogLevelInfo != 0xff))
+		addToLog(LogLevelInfo, string);
+}
+
+void DLBus::AddToErrorLog(const String& string)
+{
+	if (LogLevelError != 0xff)
+		addToLog(LogLevelError, string);
+}
+
+void DLBus::attachDLBusInterrupt(void)
+{
+	ISR_Receiving = false;
+  attachInterrupt(digitalPinToInterrupt(ISR_DLB_Pin), ISR, CHANGE);
+}
+
+void DLBus::StartReceiving(void)
+{
+  noInterrupts ();                              // make sure we don't get interrupted before we are ready
+  ISR_PulseCount = 0;
+  ISR_Receiving = (ISR_PtrChangeBitStream != nullptr);
+  ISR_AllBitsReceived = false;
+  interrupts ();                                // interrupts allowed now, next instruction WILL be executed
+}
+
+void ICACHE_RAM_ATTR DLBus::ISR(void)
+{
+		if (__instance)
+		{
+			__instance->ISR_PinChanged();
+		}
+}
+
+void ICACHE_RAM_ATTR DLBus::ISR_PinChanged(void)
+{
+  long TimeDiff = usecPassedSince(ISR_TimeLastBitChange);  // time difference to previous pulse in µs
+  ISR_TimeLastBitChange = micros();                               // save last pin change time
+  if (ISR_Receiving) {
+    uint8_t val = digitalRead(ISR_DLB_Pin);  // read state
+    // check pulse width
+    if (TimeDiff >= 2*ISR_MinDoublePulseWidth)     val |= DLbus_FlagLongerThanTwiceDoubleWidth; // longer then 2x double pulse width
+    else if (TimeDiff > ISR_MaxDoublePulseWidth)   val |= DLbus_FlagLongerThanDoubleWidth;      // longer then double pulse width
+    else if (TimeDiff >= ISR_MinDoublePulseWidth)  val |= DLbus_FlagDoubleWidth;                // double pulse width
+    else if (TimeDiff > ISR_MaxPulseWidth)         val |= DLbus_FlagBetweenDoubleSingleWidth;   // between double and single pulse width
+    else if (TimeDiff < ISR_MinPulseWidth)         val |= DLbus_FlagShorterThanSingleWidth;     // shorter then single pulse width
+    else val |= DLbus_FlagSingleWidth;                                   												// single pulse width
+    if (ISR_PulseCount < 2) {
+      // check if sync is received
+      if (val & DLbus_FlagLongerThanTwiceDoubleWidth) {
+        // sync received
+        *ISR_PtrChangeBitStream = !(val & 0x01);
+        *(ISR_PtrChangeBitStream+1) = val;
+        ISR_PulseCount = 2;
+      }
+      else
+        ISR_PulseCount = 1;                                   // flag that interrupt is receiving
+    }
+    else {
+      *(ISR_PtrChangeBitStream+ISR_PulseCount) = val;         // set bit
+      ISR_PulseCount++;
+      ISR_Receiving = (ISR_PulseCount < ISR_PulseNumber);     // stop P092_receiving when data frame is complete
+      ISR_AllBitsReceived = !ISR_Receiving;
+    }
+  }
+}
+
+boolean DLBus::CheckTimings(void) {
+  uint8_t rawval, val;
+  uint8_t WrongTimeCnt = 0;
+  int i;
+#ifdef DLbus_DEBUG
+    uint16_t WrongTimingArray[5][6];
+#endif // DLbus_DEBUG
+
+//  AddToInfoLog(F("Receive stopped."));
+
+  ISR_PulseCount = 0;
+  for (i = 0; i <= ISR_PulseNumber; i++) {
+    // store DLbus_ChangeBitStream into ByteStream
+    rawval = *(ISR_PtrChangeBitStream+i);
+    if (rawval & DLbus_FlagsWrongTiming) {
+      // wrong DLbus_time_diff
+      if (ISR_PulseCount > 0) {
+#ifdef DLbus_DEBUG
+        WrongTimingArray[WrongTimeCnt][0] = i;
+        WrongTimingArray[WrongTimeCnt][1] = ISR_PulseCount;
+        WrongTimingArray[WrongTimeCnt][2] = BitNumber;
+        WrongTimingArray[WrongTimeCnt][3] = rawval;
+#endif // DLbus_DEBUG
+        if ((rawval == DLbus_FlagLongerThanTwiceDoubleWidth) && (*(ISR_PtrChangeBitStream+i-1) == (DLbus_FlagDoubleWidth | 0x01))) {
+          // Add two additional short pulses (low and high), previous bit is High and contains DLbus_FlagDoubleWidth
+          ProcessBit(0);
+          ProcessBit(1);
+#ifdef DLbus_DEBUG
+          WrongTimingArray[WrongTimeCnt][4] = DLbus_FlagSingleWidth;
+          WrongTimingArray[WrongTimeCnt][5] = DLbus_FlagSingleWidth+1;
+#endif // DLbus_DEBUG
+        }
+#ifdef DLbus_DEBUG
+        else {
+          WrongTimingArray[WrongTimeCnt][4] = 0xff;
+          WrongTimingArray[WrongTimeCnt][5] = 0xff;
+        }
+#endif // DLbus_DEBUG
+        WrongTimeCnt++;
+        if (WrongTimeCnt >=5)
+         return false;
+      }
+    }
+    else {
+      val = rawval & 0x01;
+      if ((rawval & DLbus_FlagDoubleWidth) == DLbus_FlagDoubleWidth) {
+        // double pulse width
+        ProcessBit(!val);
+        ProcessBit(val);
+      }
+      else {
+        // single pulse width
+        ProcessBit(val);
+      }
+    }
+  }
+//  AddToInfoLog(F("DLbus_ChangeBitStream copied."));
+
+#ifdef DLbus_DEBUG
+  if (WrongTimeCnt > 0) {
+    if (IsLogLevelInfo) {
+	    String log = F("Wrong Timings: ");
+	    AddToInfoLog(log);
+	    for (i = 0; i < WrongTimeCnt; i++) {
+	      log = i + 1;
+	      log += F(": PulseCount:");
+	      log += WrongTimingArray[i][1];
+	      log += F(": BitCount:");
+	      log += WrongTimingArray[i][2];
+	      log += F(" Value:0x");
+	      log += String(WrongTimingArray[i][3], HEX);
+	      log += F(" ValueBefore:0x");
+	      log += String(*(ISR_PtrChangeBitStream+WrongTimingArray[i][0] - 1), HEX);
+	      log += F(" ValueAfter:0x");
+	      log += String(*(ISR_PtrChangeBitStream+WrongTimingArray[i][0] + 1), HEX);
+	      if (WrongTimingArray[i][4]!=0xff) {
+	        log += F(" Added:0x");
+	        log += String(WrongTimingArray[i][4], HEX);
+	      }
+	      if (WrongTimingArray[i][5]!=0xff) {
+	        log += F(" Added:0x");
+	        log += String(WrongTimingArray[i][5], HEX);
+	      }
+	      AddToInfoLog(log);
+	    }
+		}
+  }
+#endif // DLbus_DEBUG
+  return true;
+}
+
+void DLBus::ProcessBit(uint8_t b) {
+  // ignore first pulse
+  ISR_PulseCount++;
+  if (ISR_PulseCount % 2)
+    return;
+  BitNumber = (ISR_PulseCount / 2);
+  if (b)
+    ByteStream[BitNumber / 8] |= (1 << (BitNumber % 8)); // set bit
+  else
+    ByteStream[BitNumber / 8] &= ~(1 << (BitNumber % 8)); // clear bit
+}
+
+boolean DLBus::Processing(void) {
+boolean inverted = false;
+int16_t StartBit;                                    // first bit of data frame (-1 not recognized)
+String log;
+	AddToInfoLog(F("Processing..."));
+  StartBit = Analyze(); // find the data frame's beginning
+  // inverted signal?
+  while (StartBit == -1) {
+    if (inverted) {
+    	AddToErrorLog(F("Error: Already inverted!"));
+      return false;
+    }
+    Invert(); // invert again
+    inverted = true;
+    StartBit = Analyze();
+    if (StartBit == -1) {
+    	AddToErrorLog(F("Error: No data frame available!"));
+      return false;
+    }
+    uint16_t RequiredBitStreamLength = (ISR_PulseNumber - DLBus_ReserveBytes)/DLBus_BitChangeFactor;
+    if ((BitNumber-StartBit) < RequiredBitStreamLength) {
+      // no complete data frame available (difference between start_bit and received bits is < RequiredBitStreamLength)
+			AddToErrorLog(F("Start bit too close to end of stream!"));
+      if (IsLogLevelInfo) {
+	      log = F("# Required bits: ");
+	      log += RequiredBitStreamLength;
+	      log += F(" StartBit: ");
+	      log += StartBit;
+	      log += F(" / EndBit: ");
+	      log += BitNumber;
+	      AddToInfoLog(log);
+			}
+      return false;
+    }
+  }
+
+  if (IsLogLevelInfo) {
+	  log = F("StartBit: ");
+	  log += StartBit;
+	  log += F(" / EndBit: ");
+	  log += BitNumber;
+	  AddToInfoLog(log);
+	}
+  Trim(StartBit); // remove start and stop bits
+
+  if (CheckDevice()) // check connected device
+    return true;
+  else {
+  	AddToErrorLog(F("Error: Device not found!"));
+    return false;
+  }
+}
+
+int DLBus::Analyze(void) {
+  uint8_t sync=0;
+  // find SYNC (16 * sequential 1)
+  for (int i = 0; i < BitNumber; i++) {
+    if (ReadBit(i))
+      sync++;
+    else
+      sync = 0;
+    if (sync == DLBus_SyncBits) {
+      // finde erste 0 // find first 0
+      while (ReadBit(i) == 1)
+        i++;
+      return i; // beginning of data frame
+    }
+  }
+  // no data frame available. check signal?
+  return -1;
+}
+
+void DLBus::Invert(void) {
+	AddToInfoLog(F("Invert bit stream..."));
+  for (int i = 0; i < BitNumber; i++)
+    WriteBit(i, ReadBit(i) ? 0 : 1); // invert every bit
+}
+
+uint8_t DLBus::ReadBit(int pos) {
+  int row = pos / 8; // detect position in bitmap
+  int col = pos % 8;
+  return (((ByteStream[row]) >> (col)) & 0x01); // return bit
+}
+
+void DLBus::WriteBit(int pos, uint8_t set) {
+  int row = pos / 8; // detect position in bitmap
+  int col = pos % 8;
+  if (set)
+    ByteStream[row] |= 1 << col; // set bit
+  else
+    ByteStream[row] &= ~(1 << col); // clear bit
+}
+
+void DLBus::Trim(int start_bit) {
+  for (int i = start_bit, bit = 0; i < BitNumber; i++) {
+    int offset = i - start_bit;
+    // ignore start and stop bits:
+    // start bits: 0 10 20 30, also  x    % 10 == 0
+    // stop bits:  9 19 29 39, also (x+1) % 10 == 0
+    if (offset % 10 && (offset + 1) % 10) {
+      WriteBit(bit, ReadBit(i));
+      bit++;
+    }
+  }
+}
+
+boolean DLBus::CheckDevice(void) {
+  // Data frame of a device?
+  if (ByteStream[0] == DeviceBytes[0]) {
+    if ((DeviceBytes[1] == 0) || (ByteStream[1] == DeviceBytes[1]))
+      return true;
+  }
+  if (IsLogLevelInfo) {
+	  String log = F("# Received DeviceByte(s): 0x");
+	  log += String(ByteStream[0], HEX);
+	  if (DeviceBytes[1] != 0)
+	    log += String(ByteStream[1], HEX);
+	  log += F(" Requested: 0x");
+	  log += String(DeviceBytes[0], HEX);
+	  if (DeviceBytes[1] != 0)
+	    log += String(DeviceBytes[1], HEX);
+	  AddToInfoLog(log);
+	}
+  return false;
+}
+
+boolean DLBus::CheckCRC(uint8_t IdxCRC) {
+  // CRC check sum
+  if (IdxCRC == 0)
+    return true;
+	AddToInfoLog(F("Check CRC..."));
+  uint16_t dataSum = 0;
+  for (int i = 0; i < IdxCRC; i++)
+    dataSum = dataSum + ByteStream[i];
+  dataSum = dataSum & 0xff;
+  if (dataSum == ByteStream[IdxCRC])
+    return true;
+	AddToErrorLog(F("Check CRC failed!"));
+  if (IsLogLevelInfo) {
+	  String log = F("# Calculated CRC: 0x");
+	  log += String(dataSum, HEX);
+	  log += F(" Received: 0x");
+	  log += String(ByteStream[IdxCRC], HEX);
+	  AddToInfoLog(log);
+	}
+  return false;
+}
diff --git a/lib/DLBus/DLBus.h b/lib/DLBus/DLBus.h
new file mode 100644
index 000000000..5e8ef99af
--- /dev/null
+++ b/lib/DLBus/DLBus.h
@@ -0,0 +1,65 @@
+#ifndef DLBus_H
+#define DLBus_H
+
+#include <Arduino.h>
+
+/*********************************************************************************************\
+  DLBus subs to get values from the receiving bitstream
+\*********************************************************************************************/
+// one data frame has <P092_DataSettings.DataBytes> data bytes + SYNC, e.g. 64 * (8+1+1) + 16 = 656
+// 656 * 2 = 1312 (twice as much as a data frame is saved
+// so there's one complete data frame
+
+#define DLbus_MaxDataBytes 64
+#define DLbus_AdditionalRecBytes 2
+#define DLbus_StopBits 1
+#define DLbus_StartBits 1
+#define DLBus_SyncBits 16
+#define DLBus_ReserveBytes 20
+#define DLBus_BitChangeFactor 2
+#define DLbus_MaxDataBits (((DLbus_MaxDataBytes + DLbus_AdditionalRecBytes) * (DLbus_StartBits + 8 + DLbus_StopBits) + DLBus_SyncBits) * DLBus_BitChangeFactor) + DLBus_ReserveBytes
+        // MaxDataBits is double of the maximum bit length because each bit change is stored
+        // (((64+2) * (8+1+1) + 16) * 2) + 50 = 1402 bytes
+
+class DLBus
+{
+	public:
+		DLBus();	// constructor of DLBus object
+		~DLBus();	// destructor of DLBus object
+
+		volatile uint8_t ISR_DLB_Pin = 0xFF;
+		volatile boolean ISR_Receiving = false;            	// receiving flag
+		volatile boolean ISR_AllBitsReceived = false;
+		volatile uint16_t ISR_PulseCount;                   // number of received pulses
+		volatile uint16_t ISR_PulseNumber;                  // max naumber of the received pulses
+		volatile uint16_t ISR_MinPulseWidth, ISR_MaxPulseWidth, ISR_MinDoublePulseWidth, ISR_MaxDoublePulseWidth;
+		// identification bytes for each DL bus device
+	  uint8_t DeviceBytes[2];
+		uint8_t ByteStream[DLbus_MaxDataBits / 8 + 1];  		// every bit gets sorted into a bitmap
+		boolean IsLogLevelInfo = false;
+		uint8_t LogLevelInfo = 0xff;
+		uint8_t LogLevelError = 0xFF;
+		void attachDLBusInterrupt(void);
+		void StartReceiving(void);
+		boolean CheckTimings(void);
+		boolean Processing(void);
+		boolean CheckCRC(uint8_t IdxCRC);
+	private:
+		volatile uint32_t ISR_TimeLastBitChange = 0;				// remember time of last transition
+		uint8_t DLbus_ChangeBitStream[DLbus_MaxDataBits];   // received bit change stream (each bit change is extended to uint8_t, containing the timing flags)
+		uint16_t BitNumber;                                 // bit number of the received DLbus_ChangeBitStream
+		static void ISR(void);
+		void ISR_PinChanged(void);
+		void ProcessBit(uint8_t b);
+		int Analyze(void);
+		void Invert(void);
+		uint8_t ReadBit(int pos);
+		void WriteBit(int pos, uint8_t set);
+		void Trim(int start_bit);
+		boolean CheckDevice(void);
+		static DLBus* __instance;
+		void AddToInfoLog(const String& string);
+		void AddToErrorLog(const String& string);
+};
+
+#endif
diff --git a/lib/DLBus/keywords.txt b/lib/DLBus/keywords.txt
new file mode 100644
index 000000000..d0c8c4bb0
--- /dev/null
+++ b/lib/DLBus/keywords.txt
@@ -0,0 +1,6 @@
+DLBus                 KEYWORD1
+attachDLBusInterrupt	KEYWORD2
+StartReceiving        KEYWORD2
+CheckTimings          KEYWORD2
+Processing            KEYWORD2
+CheckCRC              KEYWORD2
diff --git a/src/ESPEasy.ino b/src/ESPEasy.ino
index 27fafd955..e4efc7acd 100644
--- a/src/ESPEasy.ino
+++ b/src/ESPEasy.ino
@@ -81,7 +81,7 @@
 //   BMP280 I2C Barometric Pressure sensor
 //   SHT1X temperature/humidity sensors
 //   Ser2Net server
-
+//   DL-Bus (Technische Alternative)
 
 // Define globals before plugin sets to allow a personal override of the selected plugins
 #include "ESPEasy-Globals.h"
diff --git a/src/_P092_DLbus.ino b/src/_P092_DLbus.ino
new file mode 100644
index 000000000..71ee90b62
--- /dev/null
+++ b/src/_P092_DLbus.ino
@@ -0,0 +1,947 @@
+#ifdef USES_P092
+
+//#######################################################################################################
+//########################### Plugin 092: DL-bus from Technische Alternative ############################
+//#######################################################################################################
+
+/**************************************************\
+   This plug-in reads and decodes the DL-Bus.
+   The DL-Bus is used in heating control units e.g. sold by Technische Alternative (www.ta.co.at).
+
+   The idea for this plug-in is based on Martin Kropf's project UVR31_RF24 (https://github.com/martinkropf/UVR31_RF24)
+
+   The plug-in is tested and workis fine for the ESR21 device.
+   The plug-in should be also able to decode the information from the
+   UVR31, UVR1611 and UVR 61-3 devices.
+
+   The selected input needs a voltage divider as follows because the DL-Bus runs on 12 volts for
+	 following devices: UVR31, UVR42, UVR64, HZR65, EEG30 and TFM66
+   DLbus@12V - 8k6 - input@3.3V - 3k3 - ground
+
+   For following devices just a pull up resistor is needed if the device is used stand alone:
+	 UVR1611, UVR61-3 and ESR21
+
+   @uwekaditz 2020-03-01 Memory usage optimized
+	 CHG: Moved arrays into the class DLBus
+   CHG: Moved arrays to PLUGIN_092_DEBUG
+
+	 @uwekaditz 2019-12-15 Memory usage optimized
+	 CHG: Moved the array for the received bit changes to stativ uint_8t, the ISR call uses only a volatile pointer to it
+	 CHG: some more defines and name changes for better explanation
+
+	 @uwekaditz 2019-12-14 Timing optimized
+	 CHG: Removed the while (P092_receiving) loop.
+	 CHG: Starting of the receiving and processing of the received bit stream are now done in the PLUGIN_ONCE_A_SECOND call
+			  PLUGIN_READ call just uses the already processed data
+
+	 @uwekaditz 2019-12-08 Inital commit to mega
+
+\**************************************************/
+
+#include <DLBus.h>
+
+#define PLUGIN_092
+#define PLUGIN_ID_092         92
+//#define PLUGIN_092_DEBUG    // additional debug messages in the log
+#define PLUGIN_NAME_092       "Heating - DL-Bus (Technische Alternative)"
+#define PLUGIN_VALUENAME1_092 "Value"
+
+#define P092_DLbus_OptionCount 8
+#define P092_DLbus_ValueCount 1
+#define P092_DLbus_DeviceCount 5
+
+uint8_t P092_Last_DLB_Pin;
+boolean P092_init = false;
+boolean P092_ReceivedOK = false;
+uint32_t P092_LastReceived = 0;
+struct _P092_DataStruct
+{
+  uint8_t				DataBytes;
+  uint8_t       DeviceByte0;
+  uint8_t       DeviceByte1;
+  uint8_t       DeviceBytes;
+  uint8_t       DontCareBytes;
+  uint8_t       TimeStampBytes;
+  uint8_t       MaxSensors;
+  uint8_t       MaxExtSensors;
+  uint8_t       OutputBytes;
+  uint8_t       SpeedBytes;
+  uint8_t       AnalogBytes;
+  uint8_t       VolumeBytes;
+  uint8_t       MaxHeatMeters;
+  uint8_t       CurrentHmBytes;
+  uint8_t       MWhBytes;
+
+  uint16_t      DLbus_MinPulseWidth;
+  uint16_t      DLbus_MaxPulseWidth;
+  uint16_t      DLbus_MinDoublePulseWidth;
+  uint16_t      DLbus_MaxDoublePulseWidth;
+  uint8_t       IdxSensor;
+  uint8_t       IdxExtSensor;
+  uint8_t       IdxOutput;
+  uint8_t       IdxDrehzahl;
+  uint8_t       IdxAnalog;
+  uint8_t       IdxHmRegister;
+  uint8_t       IdxVolume;
+  uint8_t       IdxHeatMeter1;
+  uint8_t       IdxkWh1;
+  uint8_t       IdxMWh1;
+  uint8_t       IdxHeatMeter2;
+  uint8_t       IdxkWh2;
+  uint8_t       IdxMWh2;
+  uint8_t       IdxHeatMeter3;
+  uint8_t       IdxkWh3;
+  uint8_t       IdxMWh3;
+  uint8_t       IdxCRC;
+} P092_DataSettings;
+
+typedef struct {
+  uint8_t Idx;
+  uint8_t mode;
+  float   value;
+} sP092_ReadData;
+
+DLBus *DLbus_Data = nullptr;
+
+// decoding the manchester code
+// pulse width @ 488hz: 1000ms/488 = 2,048ms = 2048µs
+// 2048µs / 2 = 1024µs (2 pulses for one bit)
+// pulse width @ 50hz: 1000ms/50 = 20ms = 20000µs
+// 20000µs / 2 = 10000µs (2 pulses for one bit)
+#define P092_pulse_width_488        1024   // µs
+#define P092_pulse_width_50         10000  // µs
+
+// % tolerance for variances at the pulse width
+#define P092_percentage_variance    10
+// 1001 or 0110 are two sequential pulses without transition
+#define P092_double_pulse_width_488 (P092_pulse_width_488 * 2)
+#define P092_double_pulse_width_50  (P092_pulse_width_50 * 2)
+
+// calculating the tolerance limits for variances
+#define P092_min_width_488          (P092_pulse_width_488 - (P092_pulse_width_488 *  P092_percentage_variance / 100))
+#define P092_max_width_488          (P092_pulse_width_488 + (P092_pulse_width_488 * P092_percentage_variance / 100))
+#define P092_double_min_width_488   (P092_double_pulse_width_488 - (P092_pulse_width_488 * P092_percentage_variance / 100))
+#define P092_double_max_width_488   (P092_double_pulse_width_488 + (P092_pulse_width_488 * P092_percentage_variance / 100))
+#define P092_min_width_50           (P092_pulse_width_50 - (P092_pulse_width_50 *  P092_percentage_variance / 100))
+#define P092_max_width_50           (P092_pulse_width_50 + (P092_pulse_width_50 * P092_percentage_variance / 100))
+#define P092_double_min_width_50    (P092_double_pulse_width_50 - (P092_pulse_width_50 * P092_percentage_variance / 100))
+#define P092_double_max_width_50    (P092_double_pulse_width_50 + (P092_pulse_width_50 * P092_percentage_variance / 100))
+
+boolean P092_GetData(int OptionIdx, int CurIdx, sP092_ReadData* ReadData);
+
+boolean Plugin_092(uint8_t function, struct EventStruct *event, String& string)
+{
+  boolean success = false;
+  int OptionIdx, CurIdx;
+  sP092_ReadData P092_ReadData;
+
+  uint8_t P092_MaxIdx[P092_DLbus_OptionCount];
+  int P092_ValueType, P092_ValueIdx;
+  int P092_OptionValueDecimals[P092_DLbus_OptionCount] = {
+    // Dezimalstellen der Variablen
+    0,  //F("None")
+    1,  //[0,1°C]     F("Sensor")
+    1,  //[0,1°C]     F("Ext. sensor")
+    0,  //            F("Digital output")
+    0,  //            F("Speed step")
+    1,  //[0,1V]      F("Analog output")
+    1,  //[0,1kW]     F("Heat power (kW)") Attention: UVR1611 in 0,01kW
+    4   //[0,0001MWh] F("Heat meter (MWh)")
+  };
+
+
+  const String plugin_092_ValStr = F("p092_Value");
+  const String plugin_092_IdxStr = F("p092_Idx");
+
+
+  switch (function)
+  {
+    case PLUGIN_DEVICE_ADD:
+      {
+        Device[++deviceCount].Number = PLUGIN_ID_092;
+        Device[deviceCount].Type = DEVICE_TYPE_SINGLE;
+        Device[deviceCount].VType = SENSOR_TYPE_SINGLE;
+        Device[deviceCount].Ports = 0;
+        Device[deviceCount].PullUpOption = false;
+        Device[deviceCount].InverseLogicOption = false;
+        Device[deviceCount].FormulaOption = false;
+        Device[deviceCount].ValueCount = P092_DLbus_ValueCount;
+        Device[deviceCount].SendDataOption = true;
+        Device[deviceCount].TimerOption = true;
+        Device[deviceCount].GlobalSyncOption = true;
+        Device[deviceCount].DecimalsOnly = true;
+        break;
+      }
+
+    case PLUGIN_GET_DEVICENAME:
+      {
+        string = F(PLUGIN_NAME_092);
+        break;
+      }
+
+    case PLUGIN_GET_DEVICEVALUENAMES:
+      {
+        strcpy_P(ExtraTaskSettings.TaskDeviceValueNames[0], PSTR(PLUGIN_VALUENAME1_092));
+        break;
+      }
+
+    case PLUGIN_WEBFORM_LOAD:
+      {
+        P092_Last_DLB_Pin = CONFIG_PIN1;
+
+        const String plugin_092_DefValueName = F(PLUGIN_VALUENAME1_092);
+        const int P092_OptionTypes[P092_DLbus_OptionCount] = {
+          // Index der Variablen
+          0,  //F("None")
+          1,  //F("Sensor")
+          2,  //F("Ext. sensor")
+          3,  //F("Digital output")
+          4,  //F("Speed step")
+          5,  //F("Analog output")
+          6,  //F("Heat power (kW)")
+          7   //F("Heat meter (MWh)")
+        };
+        const String Options[P092_DLbus_OptionCount] = {
+          F("None"),
+          F("Sensor"),
+          F("Ext. sensor"),
+          F("Digital output"),
+          F("Speed step"),
+          F("Analog output"),
+          F("Heat power (kW)"),
+          F("Heat meter (MWh)")
+        };
+        const String Devices[P092_DLbus_DeviceCount] = { F("ESR21"), F("UVR31"), F("UVR1611"), F("UVR 61-3 (bis V8.2)"), F("UVR 61-3 (ab V8.3)") };
+        const int DevTypes[P092_DLbus_DeviceCount] = { 21, 31, 1611, 6132, 6133 };
+
+        addFormSelector(F("DL-Bus Type"), F("p092_dlbtype"), P092_DLbus_DeviceCount, Devices, DevTypes, NULL, PCONFIG(0), true );
+
+        // Calculation of the max indices for each sensor type
+        // default indizes for UVR31
+            P092_MaxIdx[0] = 0; // None
+            P092_MaxIdx[1] = 3; // Sensor
+            P092_MaxIdx[2] = 0; // Ext. sensor
+            P092_MaxIdx[3] = 1; // Digital output
+            P092_MaxIdx[4] = 0; // Speed step
+            P092_MaxIdx[5] = 0; // Analog output
+            P092_MaxIdx[6] = 0; // Heat power (kW)
+            P092_MaxIdx[7] = 0; // Heat meter (MWh)
+        switch (PCONFIG(0)) {
+          case 21:  //ESR21
+            P092_MaxIdx[2] = 6; // Ext. sensor
+            P092_MaxIdx[4] = 1; // Speed step
+            P092_MaxIdx[5] = 1; // Analog output
+            P092_MaxIdx[6] = 1; // Heat power (kW)
+            P092_MaxIdx[7] = 1; // Heat meter (MWh)
+            break;
+          case 1611:  //UVR1611
+            P092_MaxIdx[1] = 16; // Sensor
+            P092_MaxIdx[3] = 13; // Digital output
+            P092_MaxIdx[4] = 4; // Speed step
+            P092_MaxIdx[6] = 2; // Heat power (kW)
+            P092_MaxIdx[7] = 2; // Heat meter (MWh)
+            break;
+          case 6132:  //UVR 61-3 (bis V8.2)
+            P092_MaxIdx[1] = 6; // Sensor
+            P092_MaxIdx[3] = 8; // Digital output
+            P092_MaxIdx[4] = 1; // Speed step
+            P092_MaxIdx[5] = 1; // Analog output
+            P092_MaxIdx[6] = 1; // Heat power (kW)
+            P092_MaxIdx[7] = 1; // Heat meter (MWh)
+            break;
+          case 6133:  //UVR 61-3 (ab V8.3)
+            P092_MaxIdx[1] = 6; // Sensor
+            P092_MaxIdx[2] = 9; // Ext. sensor
+            P092_MaxIdx[3] = 3; // Digital output
+            P092_MaxIdx[4] = 1; // Speed step
+            P092_MaxIdx[5] = 2; // Analog output
+            P092_MaxIdx[6] = 3; // Heat power (kW)
+            P092_MaxIdx[7] = 3; // Heat meter (MWh)
+            break;
+        }
+
+        addFormSubHeader(F("Inputs"));
+
+        for (int i = 0; i < P092_DLbus_ValueCount; i++) {
+          P092_ValueType = PCONFIG(i + 1) >> 8;
+          P092_ValueIdx = PCONFIG(i + 1) & 0x00FF;
+
+          addFormSelector(plugin_092_DefValueName, plugin_092_ValStr, P092_DLbus_OptionCount, Options, P092_OptionTypes, NULL, P092_ValueType, true);
+          if (P092_MaxIdx[P092_ValueType] > 1) {
+            CurIdx = P092_ValueIdx;
+            if (CurIdx < 1) {
+              CurIdx = 1;
+            }
+            if (CurIdx > P092_MaxIdx[P092_ValueType]) {
+              CurIdx = P092_MaxIdx[P092_ValueType];
+            }
+	          addHtml(F(" Index: "));
+            addNumericBox(plugin_092_IdxStr, CurIdx, 1, P092_MaxIdx[P092_ValueType]);
+          }
+        }
+
+        UserVar[event->BaseVarIndex] = NAN;
+
+        success = true;
+        break;
+      }
+
+    case PLUGIN_WEBFORM_SAVE:
+      {
+        PCONFIG(0) = getFormItemInt(F("p092_dlbtype"));
+        if (PCONFIG(0) == 1611)  // only UVR1611
+          P092_OptionValueDecimals[6] = 2;
+
+        for (int i = 0; i < P092_DLbus_ValueCount; i++) {
+          OptionIdx = getFormItemInt(plugin_092_ValStr);
+          CurIdx = getFormItemInt(plugin_092_IdxStr);
+          if (CurIdx < 1) {
+            CurIdx = 1;
+          }
+          PCONFIG(i + 1) = (OptionIdx << 8) + CurIdx;
+          ExtraTaskSettings.TaskDeviceValueDecimals[event->BaseVarIndex + i] = P092_OptionValueDecimals[OptionIdx];
+        }
+
+        if (DLbus_Data == nullptr) {
+          addLog(LOG_LEVEL_ERROR, F("## P092_save: Error DL-Bus: Class not initialized!"));
+          return false;
+        }
+
+        if (P092_Last_DLB_Pin != CONFIG_PIN1) {
+          // pin number is changed -> run a new init
+          P092_init = false;
+          if (DLbus_Data->ISR_DLB_Pin != 0xFF) {
+            // interrupt was already attached to P092_DLB_Pin
+            detachInterrupt(digitalPinToInterrupt(DLbus_Data->ISR_DLB_Pin));
+            addLog(LOG_LEVEL_INFO, F("P092_save: detachInterrupt"));
+          }
+        }
+
+#ifdef PLUGIN_092_DEBUG
+        if (loglevelActiveFor(LOG_LEVEL_INFO)) {
+
+	        String log = F("PLUGIN_WEBFORM_SAVE :");
+	        log += F(" DLB_Pin:");
+	        log += CONFIG_PIN1;
+	        log += F(" DLbus_MinPulseWidth:");
+	        log += P092_DataSettings.DLbus_MinPulseWidth;
+	        log += F(" DLbus_MaxPulseWidth:");
+	        log += P092_DataSettings.DLbus_MaxPulseWidth;
+	        log += F(" DLbus_MinDoublePulseWidth:");
+	        log += P092_DataSettings.DLbus_MinDoublePulseWidth;
+	        log += F(" DLbus_MaxDoublePulseWidth:");
+	        log += P092_DataSettings.DLbus_MaxDoublePulseWidth;
+	        log += F(" IdxSensor:");
+	        log += P092_DataSettings.IdxSensor;
+	        log += F(" IdxExtSensor:");
+	        log += P092_DataSettings.IdxExtSensor;
+	        log += F(" IdxOutput:");
+	        log += P092_DataSettings.IdxOutput;
+	        if (P092_DataSettings.SpeedBytes > 0) {
+	          log += F(" IdxDrehzahl:");
+	          log += P092_DataSettings.IdxDrehzahl;
+	        }
+	        if (P092_DataSettings.AnalogBytes > 0) {
+	          log += F(" IdxAnalog:");
+	          log += P092_DataSettings.IdxAnalog;
+	        }
+	        if (P092_DataSettings.MaxHeatMeters > 0) {
+	          log += F(" IdxHmRegister:");
+	          log += P092_DataSettings.IdxHmRegister;
+	        }
+	        if (P092_DataSettings.VolumeBytes > 0) {
+	          log += F(" IdxVolume:");
+	          log += P092_DataSettings.IdxVolume;
+	        }
+	        if (P092_DataSettings.MaxHeatMeters > 0) {
+	          log += F(" IdxHM1:");
+	          log += P092_DataSettings.IdxHeatMeter1;
+	          log += F(" IdxkWh1:");
+	          log += P092_DataSettings.IdxkWh1;
+	          log += F(" IdxMWh1:");
+	          log += P092_DataSettings.IdxMWh1;
+	        }
+	        if (P092_DataSettings.MaxHeatMeters > 1) {
+	          log += F(" IdxHM2:");
+	          log += P092_DataSettings.IdxHeatMeter2;
+	          log += F(" IdxkWh2:");
+	          log += P092_DataSettings.IdxkWh2;
+	          log += F(" IdxMWh2:");
+	          log += P092_DataSettings.IdxMWh2;
+	        }
+	        if (P092_DataSettings.MaxHeatMeters > 2) {
+	          log += F(" IdxHM3:");
+	          log += P092_DataSettings.IdxHeatMeter3;
+	          log += F(" IdxkWh3:");
+	          log += P092_DataSettings.IdxkWh3;
+	          log += F(" IdxMWh3:");
+	          log += P092_DataSettings.IdxMWh3;
+	        }
+	        log += F(" IdxCRC:");
+	        log += P092_DataSettings.IdxCRC;
+	        addLog(LOG_LEVEL_INFO, log);
+				}
+#endif  // PLUGIN_092_DEBUG
+        UserVar[event->BaseVarIndex] = NAN;
+        success = true;
+        break;
+      }
+
+    case PLUGIN_INIT:
+      {
+        if (P092_init) {
+          addLog(LOG_LEVEL_ERROR, F("P092_init -> Already done!"));
+        }
+        else {
+          addLog(LOG_LEVEL_INFO, F("P092_init ..."));
+          if (DLbus_Data == nullptr) {
+            DLbus_Data = new DLBus;
+            if (DLbus_Data == nullptr) {
+              addLog(LOG_LEVEL_ERROR, F("## P092_init: Error DL-Bus: Class not initialized!"));
+              return false;
+            }
+            DLbus_Data->LogLevelInfo = LOG_LEVEL_INFO;
+            DLbus_Data->LogLevelError = LOG_LEVEL_ERROR;
+            DLbus_Data->IsLogLevelInfo = loglevelActiveFor(LOG_LEVEL_INFO);
+          }
+          P092_init = true;
+          P092_ReceivedOK = false;
+          addLog(LOG_LEVEL_INFO, F("P092_init: attachInterrupt"));
+          DLbus_Data->ISR_DLB_Pin = CONFIG_PIN1;
+          pinMode(CONFIG_PIN1, INPUT_PULLUP);
+          // on a CHANGE on the data pin P092_Pin_changed is called
+          DLbus_Data->attachDLBusInterrupt();
+          UserVar[event->BaseVarIndex] = NAN;
+        }
+        success = true;
+        break;
+      }
+
+    case PLUGIN_ONCE_A_SECOND:
+      {
+        if (WiFi.status() != WL_CONNECTED) {
+          return false;
+        }
+        if (P092_init == false) {
+          return false;
+        }
+        if (DLbus_Data == nullptr)
+          return false;
+        if (DLbus_Data->ISR_Receiving) {
+          return false;
+        }
+        Plugin_092_SetIndices(PCONFIG(0));
+        if (DLbus_Data->ISR_AllBitsReceived) {
+          DLbus_Data->ISR_AllBitsReceived = false;
+          success = DLbus_Data->CheckTimings();
+          if (success)
+            success = DLbus_Data->Processing();
+          if (success)
+            success = DLbus_Data->CheckCRC(P092_DataSettings.IdxCRC);
+          if (success) {
+            addLog(LOG_LEVEL_INFO, F("Received data OK"));
+            P092_LastReceived = millis();
+          }
+          P092_ReceivedOK = success;
+        }
+        else
+          success = P092_ReceivedOK;
+
+        if ((P092_ReceivedOK == false) || (timePassedSince(P092_LastReceived)>(static_cast<long>(Settings.TaskDeviceTimer[event->TaskIndex] * 1000/2)))) {
+          Plugin_092_StartReceiving();
+          success = true;
+        }
+        break;
+      }
+
+    case PLUGIN_READ:
+      {
+        addLog(LOG_LEVEL_ERROR, F("PLUGIN_092_READ"));
+        if (WiFi.status() != WL_CONNECTED) {
+          // too busy for DLbus while wifi connect is running
+          addLog(LOG_LEVEL_ERROR, F("## P092_read: Error DL-Bus: WiFi not connected!"));
+          return false;
+        }
+        if (P092_init == false) {
+          addLog(LOG_LEVEL_ERROR, F("## P092_read: Error DL-Bus: Not initialized!"));
+          return false;
+        }
+        if (DLbus_Data == nullptr) {
+          addLog(LOG_LEVEL_ERROR, F("## P092_read: Error DL-Bus: Class not initialized!"));
+          return false;
+        }
+        if (DLbus_Data->ISR_DLB_Pin != CONFIG_PIN1) {
+          String log = F("## P092_read: Error DL-Bus: Device Pin setting not correct!");
+          log += F(" DLB_Pin:");
+          log += DLbus_Data->ISR_DLB_Pin;
+          log += F(" Setting:");
+          log += CONFIG_PIN1;
+          addLog(LOG_LEVEL_ERROR, log);
+          return false;
+        }
+        success = P092_ReceivedOK;
+        if (P092_ReceivedOK == false) {
+          addLog(LOG_LEVEL_INFO, F("P092_read: Still receiving DL-Bus bits!"));
+        }
+        else {
+          for (int i = 0; i < P092_DLbus_ValueCount; i++) {
+            OptionIdx = PCONFIG(i + 1) >> 8;
+            CurIdx = PCONFIG(i + 1) & 0x00FF;
+            if (P092_GetData(OptionIdx, CurIdx, &P092_ReadData)) {
+              UserVar[event->BaseVarIndex + i] = P092_ReadData.value;
+            }
+            else {
+              addLog(LOG_LEVEL_ERROR, F("## P092_read: Error: No readings!"));
+            }
+          }
+        }
+        break;
+      }
+  }
+  return success;
+}
+
+void Plugin_092_SetIndices(int DeviceIndex) {
+  // Set the indices for the DL bus packet
+int iDeviceBytes, iDontCareBytes, iTimeStampBytes;
+
+  //default settings for ESR21
+    P092_DataSettings.DataBytes = 31;
+    P092_DataSettings.DLbus_MinPulseWidth = P092_min_width_488;
+    P092_DataSettings.DLbus_MaxPulseWidth = P092_max_width_488;
+    P092_DataSettings.DLbus_MinDoublePulseWidth = P092_double_min_width_488;
+    P092_DataSettings.DLbus_MaxDoublePulseWidth = P092_double_max_width_488;
+
+    P092_DataSettings.DeviceByte0 = 0x70;
+    P092_DataSettings.DeviceByte1 = 0x8F;
+    iDeviceBytes = 2;
+    iDontCareBytes = 0;
+    iTimeStampBytes = 0;
+    P092_DataSettings.MaxSensors = 3;
+    P092_DataSettings.MaxExtSensors = 6;
+    P092_DataSettings.OutputBytes = 1;
+    P092_DataSettings.SpeedBytes = 1;
+    P092_DataSettings.AnalogBytes = 1;
+    P092_DataSettings.VolumeBytes = 0;
+    P092_DataSettings.MaxHeatMeters = 1;
+    P092_DataSettings.CurrentHmBytes = 2;
+    P092_DataSettings.MWhBytes = 2;
+    P092_DataSettings.IdxCRC = 30;
+
+  switch (DeviceIndex) {
+    case 31:  //UVR31
+      P092_DataSettings.DataBytes = 8;
+      P092_DataSettings.DLbus_MinPulseWidth = P092_min_width_50;
+      P092_DataSettings.DLbus_MaxPulseWidth = P092_max_width_50;
+      P092_DataSettings.DLbus_MinDoublePulseWidth = P092_double_min_width_50;
+      P092_DataSettings.DLbus_MaxDoublePulseWidth = P092_double_max_width_50;
+
+      P092_DataSettings.DeviceByte0 = 0x30;
+      P092_DataSettings.DeviceByte1 = 0;
+      iDeviceBytes = 1;
+      P092_DataSettings.MaxExtSensors = 0;
+      P092_DataSettings.SpeedBytes = 0;
+      P092_DataSettings.AnalogBytes = 0;
+      P092_DataSettings.MaxHeatMeters = 0;
+      P092_DataSettings.CurrentHmBytes = 0;
+      P092_DataSettings.MWhBytes = 0;
+      P092_DataSettings.IdxCRC = 0;
+      break;
+    case 1611:  //UVR1611
+      P092_DataSettings.DataBytes = 64;
+
+      P092_DataSettings.DeviceByte0 = 0x80;
+      P092_DataSettings.DeviceByte1 = 0x7F;
+      iDontCareBytes = 1;
+      iTimeStampBytes = 5;
+      P092_DataSettings.MaxSensors = 16;
+      P092_DataSettings.MaxExtSensors = 0;
+      P092_DataSettings.OutputBytes = 2;
+      P092_DataSettings.SpeedBytes = 4;
+      P092_DataSettings.AnalogBytes = 0;
+      P092_DataSettings.MaxHeatMeters = 2;
+      P092_DataSettings.CurrentHmBytes = 4;
+      P092_DataSettings.IdxCRC = P092_DataSettings.DataBytes-1;
+
+      break;
+    case 6132:  //UVR 61-3 (up to V8.2)
+      P092_DataSettings.DataBytes = 35;
+
+      P092_DataSettings.DeviceByte0 = 0x90;
+      P092_DataSettings.DeviceByte1 = 0x6F;
+      iDontCareBytes = 1;
+      iTimeStampBytes = 5;
+      P092_DataSettings.MaxSensors = 6;
+      P092_DataSettings.MaxExtSensors = 0;
+      P092_DataSettings.VolumeBytes = 2;
+      P092_DataSettings.MWhBytes = 4;
+      P092_DataSettings.IdxCRC = P092_DataSettings.DataBytes-1;
+
+      break;
+    case 6133:  //UVR 61-3 (from V8.3)
+      P092_DataSettings.DataBytes = 62;
+
+      P092_DataSettings.DeviceByte0 = 0x90;
+      P092_DataSettings.DeviceByte1 = 0x9F;
+      iDontCareBytes = 1;
+      iTimeStampBytes = 5;
+      P092_DataSettings.MaxSensors = 6;
+      P092_DataSettings.MaxExtSensors = 9;
+      P092_DataSettings.MaxHeatMeters = 3;
+      P092_DataSettings.IdxCRC = P092_DataSettings.DataBytes-1;
+
+      break;
+  }
+  P092_DataSettings.IdxSensor               = iDeviceBytes + iDontCareBytes + iTimeStampBytes;
+  P092_DataSettings.IdxExtSensor            = P092_DataSettings.IdxSensor + 2 * P092_DataSettings.MaxSensors;
+  P092_DataSettings.IdxOutput               = P092_DataSettings.IdxExtSensor + 2 * P092_DataSettings.MaxExtSensors;
+  P092_DataSettings.IdxDrehzahl             = P092_DataSettings.IdxOutput + P092_DataSettings.OutputBytes;
+  P092_DataSettings.IdxAnalog               = P092_DataSettings.IdxDrehzahl + P092_DataSettings.SpeedBytes;
+  P092_DataSettings.IdxHmRegister           = P092_DataSettings.IdxAnalog + P092_DataSettings.AnalogBytes;
+  P092_DataSettings.IdxVolume               = P092_DataSettings.IdxHmRegister + 1;
+  P092_DataSettings.IdxHeatMeter1           = P092_DataSettings.IdxVolume + P092_DataSettings.VolumeBytes;
+  P092_DataSettings.IdxkWh1                 = P092_DataSettings.IdxHeatMeter1 + P092_DataSettings.CurrentHmBytes;
+  P092_DataSettings.IdxMWh1                 = P092_DataSettings.IdxkWh1 + 2;
+  P092_DataSettings.IdxHeatMeter2           = P092_DataSettings.IdxMWh1 + P092_DataSettings.MWhBytes;
+  P092_DataSettings.IdxkWh2                 = P092_DataSettings.IdxHeatMeter2 + P092_DataSettings.CurrentHmBytes;
+  P092_DataSettings.IdxMWh2                 = P092_DataSettings.IdxkWh2 + 2;
+  P092_DataSettings.IdxHeatMeter3           = P092_DataSettings.IdxMWh2 + P092_DataSettings.MWhBytes;
+  P092_DataSettings.IdxkWh3                 = P092_DataSettings.IdxHeatMeter3 + P092_DataSettings.CurrentHmBytes;
+  P092_DataSettings.IdxMWh3                 = P092_DataSettings.IdxkWh3 + 2;
+
+  return;
+}
+/*********************************************************************************************\
+  DLBus subs to get values from the P092_receiving bitstream
+\*********************************************************************************************/
+
+// sensor types
+#define DLbus_UNUSED              0b000
+#define DLbus_Sensor_DIGITAL      0b001
+#define DLbus_Sensor_TEMP         0b010
+#define DLbus_Sensor_VOLUME_FLOW  0b011
+#define DLbus_Sensor_RAYS         0b110
+#define DLbus_Sensor_ROOM         0b111
+
+// room sensor modes
+#define DLbus_RSM_AUTO            0b00
+#define DLbus_RSM_NORMAL          0b01
+#define DLbus_RSM_LOWER           0b10
+#define DLbus_RSM_STANDBY         0b11
+
+boolean P092_fetch_sensor(int number, sP092_ReadData* ReadData);
+boolean P092_fetch_output(int number, sP092_ReadData* ReadData);        // digital output byte(s)
+boolean P092_fetch_speed(int number, sP092_ReadData* ReadData);         // speed byte(s)
+boolean P092_fetch_analog(int number, sP092_ReadData* ReadData);        // analog byte(s)
+boolean P092_fetch_heatpower(int number, sP092_ReadData* ReadData);     // heat power(s)
+boolean P092_fetch_heatmeter(int number, sP092_ReadData* ReadData);     // heat meters(s)
+
+// heat meter
+typedef struct {
+  uint8_t IndexIsValid;
+  int32_t power_index;
+  int32_t kwh_index;
+  int32_t	mwh_index;
+} sDLbus_HMindex;
+sDLbus_HMindex P092_CheckHmRegister(int number);
+
+/****************\
+  DLBus P092_receiving
+\****************/
+
+void Plugin_092_StartReceiving(void) {
+  DLbus_Data->ISR_Receiving = false;
+  DLbus_Data->DeviceBytes[0] = P092_DataSettings.DeviceByte0;
+  DLbus_Data->DeviceBytes[1] = P092_DataSettings.DeviceByte1;
+  DLbus_Data->ISR_PulseNumber = (((P092_DataSettings.DataBytes + DLbus_AdditionalRecBytes) * (DLbus_StartBits + 8 +  DLbus_StopBits) + DLBus_SyncBits) * DLBus_BitChangeFactor) + DLBus_ReserveBytes;
+  DLbus_Data->ISR_MinPulseWidth = P092_DataSettings.DLbus_MinPulseWidth;
+  DLbus_Data->ISR_MaxPulseWidth = P092_DataSettings.DLbus_MaxPulseWidth;
+  DLbus_Data->ISR_MinDoublePulseWidth = P092_DataSettings.DLbus_MinDoublePulseWidth;
+  DLbus_Data->ISR_MaxDoublePulseWidth = P092_DataSettings.DLbus_MaxDoublePulseWidth;
+  DLbus_Data->StartReceiving();
+  uint32_t start=millis();
+  addLog(LOG_LEVEL_INFO, F("P092_receiving ..."));
+  while ((timePassedSince(start)<100) && (DLbus_Data->ISR_PulseCount == 0)) {
+    // wait for first pulse received (timeout 100ms)
+    yield();
+  }
+  if (DLbus_Data->ISR_PulseCount == 0) {
+    // nothing received
+    DLbus_Data->ISR_Receiving = false;
+    addLog(LOG_LEVEL_ERROR, F("## StartReceiving: Error: Nothing received! No DL bus connected!"));
+  }
+}
+
+/****************\
+  DLBus get data
+\****************/
+
+boolean P092_GetData(int OptionIdx, int CurIdx, sP092_ReadData* ReadData) {
+  String log;
+  boolean result = false;
+  switch (OptionIdx) {
+    case 1:    //F("Sensor")
+      log = F("Get Sensor");
+      log += CurIdx;
+      if (CurIdx > P092_DataSettings.MaxSensors) {
+        result=false;
+        break;
+      }
+      ReadData->Idx = P092_DataSettings.IdxSensor;
+      result = P092_fetch_sensor(CurIdx, ReadData);
+      break;
+    case 2:    //F("Sensor")
+      log = F("Get ExtSensor");
+      log += CurIdx;
+      if (CurIdx > P092_DataSettings.MaxExtSensors) {
+        result=false;
+        break;
+      }
+      ReadData->Idx = P092_DataSettings.IdxExtSensor;
+      result = P092_fetch_sensor(CurIdx, ReadData);
+      break;
+    case 3:  //F("Digital output")
+      log = F("Get DigitalOutput");
+      log += CurIdx;
+      if (CurIdx > (8 * P092_DataSettings.OutputBytes)) {
+        result=false;
+        break;
+      }
+      result = P092_fetch_output(CurIdx, ReadData);
+      break;
+    case 4:  //F("Speed step")
+      log = F("Get SpeedStep");
+      log += CurIdx;
+      if (CurIdx > P092_DataSettings.SpeedBytes) {
+        result=false;
+        break;
+      }
+      result = P092_fetch_speed(CurIdx, ReadData);
+      break;
+    case 5:  //F("Analog output")
+      log = F("Get AnalogOutput");
+      log += CurIdx;
+      if (CurIdx > P092_DataSettings.AnalogBytes) {
+        result=false;
+        break;
+      }
+      result = P092_fetch_analog(CurIdx, ReadData);
+      break;
+    case 6:  //F("Heat power (kW)")
+      log = F("Get HeatPower");
+      log += CurIdx;
+      if (CurIdx > P092_DataSettings.MaxHeatMeters) {
+        result=false;
+        break;
+      }
+      result = P092_fetch_heatpower(CurIdx, ReadData);
+      break;
+    case 7:  //F("Heat meter (MWh)"
+      log = F("Get HeatMeter");
+      log += CurIdx;
+      if (CurIdx > P092_DataSettings.MaxHeatMeters) {
+        result=false;
+        break;
+      }
+      result = P092_fetch_heatmeter(CurIdx, ReadData);
+      break;
+  }
+  if (loglevelActiveFor(LOG_LEVEL_INFO)) {
+	  log += F(": ");
+	  if (result) {
+	    log += String(ReadData->value, 1);
+	  }
+	  else {
+	    log += F("nan");
+	  }
+	  addLog(LOG_LEVEL_INFO, log);
+	}
+  return result;
+}
+
+boolean P092_fetch_sensor(int number, sP092_ReadData* ReadData) {
+  float value;
+  ReadData->mode = -1;
+  number = ReadData->Idx + (number - 1) * 2;
+  int32_t sensorvalue = (DLbus_Data->ByteStream[number + 1] << 8) | DLbus_Data->ByteStream[number];
+  if (sensorvalue == 0) {
+    return false;
+  }
+  uint8_t sensortype = (sensorvalue & 0x7000) >> 12;
+  if (!(sensorvalue & 0x8000)) { // sign positive
+    sensorvalue &= 0xfff;
+    // calculations for different sensor types
+    switch (sensortype) {
+      case DLbus_Sensor_DIGITAL:
+        value = false;
+        break;
+      case DLbus_Sensor_TEMP:
+        value = sensorvalue * 0.1;
+        break;
+      case DLbus_Sensor_RAYS:
+        value = sensorvalue;
+        break;
+      case DLbus_Sensor_VOLUME_FLOW:
+        value = sensorvalue * 4;
+        break;
+      case DLbus_Sensor_ROOM:
+        ReadData->mode = (sensorvalue & 0x600) >> 9;
+        value = (sensorvalue & 0x1ff) * 0.1;
+        break;
+      default:
+        return false;
+    }
+  }
+  else { // sign negative
+    sensorvalue |= 0xf000;
+    // calculations for different sensor types
+    switch (sensortype) {
+      case DLbus_Sensor_DIGITAL:
+        value = true;
+        break;
+      case DLbus_Sensor_TEMP:
+        value = (sensorvalue - 0x10000) * 0.1;
+        break;
+      case DLbus_Sensor_RAYS:
+        value = sensorvalue - 0x10000;
+        break;
+      case DLbus_Sensor_VOLUME_FLOW:
+        value = (sensorvalue - 0x10000) * 4;
+        break;
+      case DLbus_Sensor_ROOM:
+        ReadData->mode = (sensorvalue & 0x600) >> 9;
+        value = ((sensorvalue & 0x1ff) - 0x10000) * 0.1;
+        break;
+      default:
+        return false;
+    }
+  }
+  ReadData->value = value;
+  return true;
+}
+
+boolean P092_fetch_output(int number, sP092_ReadData* ReadData) {
+  int32_t outputs;
+
+  if (P092_DataSettings.OutputBytes > 1)
+    outputs = (DLbus_Data->ByteStream[P092_DataSettings.IdxOutput + 1] << 8) | DLbus_Data->ByteStream[P092_DataSettings.IdxOutput];
+  else
+    outputs = DLbus_Data->ByteStream[P092_DataSettings.IdxOutput];
+	if (outputs & (1 << (number - 1)))
+  	ReadData->value = 1;
+	else
+  	ReadData->value = 0;
+  return true;
+}
+
+boolean P092_fetch_speed(int number, sP092_ReadData* ReadData) {
+  uint8_t speedbyte;
+
+  if ((P092_DataSettings.IdxDrehzahl + (number - 1)) >= P092_DataSettings.IdxAnalog) {
+    // wrong index for speed, overlapping next index (IdxAnalog)
+    return false;
+  }
+  speedbyte = DLbus_Data->ByteStream[P092_DataSettings.IdxDrehzahl + (number - 1)];
+  if (speedbyte & 0x80)
+    return false;
+  ReadData->value = (speedbyte & 0x1f);
+  return true;
+}
+
+boolean P092_fetch_analog(int number, sP092_ReadData* ReadData) {
+  uint8_t analogbyte;
+
+  if ((P092_DataSettings.IdxAnalog + (number - 1)) >= P092_DataSettings.IdxHmRegister) {
+    // wrong index for analog, overlapping next index (IdxHmRegister)
+    return false;
+  }
+  analogbyte = DLbus_Data->ByteStream[P092_DataSettings.IdxAnalog + (number - 1)];
+  if (analogbyte & 0x80)
+    return false;
+  ReadData->value = (analogbyte * 0.1);
+  return true;
+}
+
+sDLbus_HMindex P092_CheckHmRegister(int number) {
+sDLbus_HMindex result;
+
+  result.IndexIsValid = 0;
+  switch (number) {
+    case 1:
+      if ((DLbus_Data->ByteStream[P092_DataSettings.IdxHmRegister] & 0x1) == 0)
+        return result;
+      result.power_index = P092_DataSettings.IdxHeatMeter1;
+      result.kwh_index = P092_DataSettings.IdxkWh1;
+      result.mwh_index = P092_DataSettings.IdxMWh1;
+      break;
+    case 2:
+      if ((DLbus_Data->ByteStream[P092_DataSettings.IdxHmRegister] & 0x2) == 0)
+        return result;
+      result.power_index = P092_DataSettings.IdxHeatMeter2;
+      result.kwh_index = P092_DataSettings.IdxkWh2;
+      result.mwh_index = P092_DataSettings.IdxMWh2;
+      break;
+    case 3:
+      if ((DLbus_Data->ByteStream[P092_DataSettings.IdxHmRegister] & 0x4) == 0)
+        return result;
+      result.power_index = P092_DataSettings.IdxHeatMeter3;
+      result.kwh_index = P092_DataSettings.IdxkWh3;
+      result.mwh_index = P092_DataSettings.IdxMWh3;
+      break;
+    default:
+      return result;
+  }
+  result.IndexIsValid = 1;
+  return result;
+}
+
+boolean P092_fetch_heatpower(int number, sP092_ReadData* ReadData) {
+  // current power
+  int32_t high;
+  sDLbus_HMindex HMindex = P092_CheckHmRegister(number);
+  if (HMindex.IndexIsValid == 0)
+    return false;
+  uint8_t b1 = DLbus_Data->ByteStream[HMindex.power_index];
+  uint8_t b2 = DLbus_Data->ByteStream[HMindex.power_index + 1];
+  if (P092_DataSettings.CurrentHmBytes > 2) {
+    uint8_t b3 = DLbus_Data->ByteStream[HMindex.power_index + 2];
+    uint8_t b4 = DLbus_Data->ByteStream[HMindex.power_index + 3];
+    high = 0x10000 * b4 + 0x100 * b3 + b2;
+    int low = (b1 * 10) / 0x100;
+    if (!(b4 & 0x80)) // sign positive
+      ReadData->value = (10 * high + low) / 100;
+    else // sign negative
+      ReadData->value = (10 * (high - 0x10000) - low) / 100;
+  }
+  else {
+    high = (b2 << 8) | b1;
+    if ((b2 & 0x80) == 0) // sign positive
+      ReadData->value = high / 10;
+    else // sign negative
+      ReadData->value = (high - 0x10000) / 10;
+  }
+  return true;
+}
+
+boolean P092_fetch_heatmeter(int number, sP092_ReadData* ReadData) {
+  // heat meter
+  int32_t heat_meter;
+  float heat_meter_mwh;
+
+  sDLbus_HMindex HMindex = P092_CheckHmRegister(number);
+  if (HMindex.IndexIsValid == 0)
+    return false;
+  heat_meter = (DLbus_Data->ByteStream[HMindex.kwh_index + 1] << 8) | DLbus_Data->ByteStream[HMindex.kwh_index];
+  heat_meter_mwh = (heat_meter * 0.1) / 1000; // in MWh
+  if (heat_meter_mwh > 1.0) {
+    // in kWh
+    heat_meter = heat_meter_mwh;
+    heat_meter_mwh -= heat_meter;
+  }
+  // MWh
+  heat_meter = (DLbus_Data->ByteStream[HMindex.mwh_index + 1] << 8) | DLbus_Data->ByteStream[HMindex.mwh_index];
+  ReadData->value = heat_meter_mwh + heat_meter;
+  return true;
+}
+
+#endif // USES_P092
diff --git a/src/define_plugin_sets.h b/src/define_plugin_sets.h
index f06951ec7..01bea5b0d 100644
--- a/src/define_plugin_sets.h
+++ b/src/define_plugin_sets.h
@@ -723,6 +723,7 @@ To create/register a plugin, you have to :
     #define USES_P063   // TTP229_KeyPad
     #define USES_P073   // 7DG
     #define USES_P079   // Wemos Motoshield
+    #define USES_P092   // DL-Bus
 #endif