diff --git a/CHANGELOG_LATEST.md b/CHANGELOG_LATEST.md
index 043b345ba..9519ed084 100644
--- a/CHANGELOG_LATEST.md
+++ b/CHANGELOG_LATEST.md
@@ -8,7 +8,7 @@
 
 ## Added
 
--
+- detect old Tado thermostat, device-id 0x19, no entities
 
 ## Fixed
 
@@ -17,4 +17,4 @@
 ## Changed
 
 - Use byte 0 for detection RC30 active heatingcircuit [#786](https://github.com/emsesp/EMS-ESP32/issues/786)
-- Write repeated selflowtemp if tx-queue is empty without verify [#954](https://github.com/emsesp/EMS-ESP32/issues/954)
+- Write repeated selflowtemp if tx-queue is empty without verify [#954](https://github.com/emsesp/EMS-ESP32/issues/954)
\ No newline at end of file
diff --git a/src/devices/thermostat.cpp b/src/devices/thermostat.cpp
index 21f8c16c9..2ecb2d4ae 100644
--- a/src/devices/thermostat.cpp
+++ b/src/devices/thermostat.cpp
@@ -1192,10 +1192,7 @@ void Thermostat::process_RC30Temp(std::shared_ptr<const Telegram> telegram) {
 
 // type 0x3E (HC1), 0x48 (HC2), 0x52 (HC3), 0x5C (HC4) - data from the RC35 thermostat (0x10) - 16 bytes
 void Thermostat::process_RC35Monitor(std::shared_ptr<const Telegram> telegram) {
-    // exit if the 15th byte (second from last) is 0x00, which I think is calculated flow setpoint temperature
-    // with weather controlled RC35s this value is >=5, otherwise can be zero and our setpoint temps will be incorrect
-    // see https://github.com/emsesp/EMS-ESP/issues/373#issuecomment-627907301
-    // some RC30_N have only 13 byte, use byte 0 for active detection.
+    // Check if heatingciruit is active, see https://github.com/emsesp/EMS-ESP32/issues/786
     if (telegram->offset > 0 || telegram->message_data[0] == 0x00) {
         return;
     }
diff --git a/src/emsdevice.h b/src/emsdevice.h
index 54df6d87d..77b9116b1 100644
--- a/src/emsdevice.h
+++ b/src/emsdevice.h
@@ -366,6 +366,7 @@ class EMSdevice {
     static constexpr uint8_t EMS_DEVICE_ID_RFSENSOR       = 0x40; // RF sensor only sending, no reply
     static constexpr uint8_t EMS_DEVICE_ID_RFBASE         = 0x50;
     static constexpr uint8_t EMS_DEVICE_ID_ROOMTHERMOSTAT = 0x17; // TADO using this with no version reply
+    static constexpr uint8_t EMS_DEVICE_ID_TADO_OLD       = 0x19; // TADO using this with no broadcast and version
 
     // generic type IDs
     static constexpr uint16_t EMS_TYPE_VERSION    = 0x02; // type ID for Version information. Generic across all EMS devices.
diff --git a/src/emsesp.cpp b/src/emsesp.cpp
index 1d2dc4873..217df90a7 100644
--- a/src/emsesp.cpp
+++ b/src/emsesp.cpp
@@ -1057,7 +1057,7 @@ bool EMSESP::add_device(const uint8_t device_id, const uint8_t product_id, const
             // see: https://github.com/emsesp/EMS-ESP32/issues/103#issuecomment-911717342 and https://github.com/emsesp/EMS-ESP32/issues/624
             name        = "RF room temperature sensor";
             device_type = DeviceType::THERMOSTAT;
-        } else if (device_id == EMSdevice::EMS_DEVICE_ID_ROOMTHERMOSTAT) {
+        } else if (device_id == EMSdevice::EMS_DEVICE_ID_ROOMTHERMOSTAT || device_id == EMSdevice::EMS_DEVICE_ID_TADO_OLD) {
             name        = "Generic thermostat";
             device_type = DeviceType::THERMOSTAT;
             flags       = DeviceFlags::EMS_DEVICE_FLAG_RC10 | DeviceFlags::EMS_DEVICE_FLAG_NO_WRITE;