Homematic IP Radiator Thermostat

The smart Homematic IP Radiator Thermostat saves up to 30% on energy thanks to individual heating profiles and connected window contacts. This reduces heating costs, lowers CO2 emissions and provides comfortable temperatures for your smart home.

Homematic IP Radiator Thermostat Homematic IP Radiator Thermostat Homematic IP Radiator Thermostat Homematic IP Radiator Thermostat Homematic IP Radiator Thermostat Homematic IP Radiator Thermostat
Homematic IP Radiator Thermostat
Homematic IP Radiator Thermostat
Homematic IP Radiator Thermostat
Homematic IP Radiator Thermostat
Homematic IP Radiator Thermostat
Homematic IP Radiator Thermostat


Individual temperature profiles are easily created via app – with up to 3 adjustable heating profiles and 13 changes per day. In this  way, heating is carried out only if necessary. And during ventilation, the room temperature is automatically lowered thanks to the open-window function.



The room temperature is controlled according to the individual needs of the user: simply via app, whether at home or on the road, directly on the device using the control wheel or conveniently via voice control (via Amazon Alexa or Google Assistant).



The Homematic IP Window and Door Contact offers exact detection of open windows and doors. The room temperature is automatically reduced to avoid any waste of energy.



High-quality metal nut for secure installation to standard radiator valves with M30 thread size. Quick and easy installation without having to drain any water or intervening in the heating system.



  • Whisper mode for quiet operation even in bedrooms
  • Boost function for quick heating of rooms
  • Eco mode for energy-saving operation with reduced room temperature
  • Valve protection function against calcification of the valve
  • Operating lock against unauthorised operation

The Homematic IP Radiator Thermostat is part of the Homematic IP smart home system and helps to reduce energy costs. The smart thermostat replaces existing radiator thermostats, enabling energy savings of up to 30 %.

The Homematic IP Radiator Thermostat can be easily installed on existing vales with a thread size of M30 (e.g. Heimeier) using the metal union nut without having to intervene in the heating system. Corresponding adapters for Danfoss valves are also supplied with the device. Power is supplied by two AA batteries, offering energy for up to 2 years.

After setting up the device, the desired room temperature can be regulated directly via the radiator thermostat itself, via the Homematic IP Wall Thermostat or Homematic IP app. With the app, up to three week profiles with up to six heating phases per day and room can be defined. The system starts to get really smart in combination with the Homematic IP Window / Door Contact. If an open window is detected by the device, the Homematic IP Radiator Thermostat automatically reduces the hot water supply of the radiator. As soon as the window is closed, also the radiator starts to increase the room temperature again. In this way, energy consumption can be reduced, the living comfort is increased and at the same time the environment can be protected. By creating week profiles, you can automate your everyday life - step into a warm bathroom in the morning, save valuable heating energy while you are not at home and enjoy the after work hours in your living room with your individually adjusted room temperature.

With the low-noise gearbox, it is also possible to use the Homematic IP Radiator Thermostat in children’s or bedrooms. The integrated limescale and frost protection function protects the valve from calcifying and freeze-up.

Note: If several radiator thermostats are used in one room at the same time, the devices can be controlled centrally via the Homematic IP app or conveniently via the Homematic IP Wall Thermostat.

Technical Specifications
Supply voltage
2x 1.5 V LR6/mignon/AA
Current consumption
120 mA (max.)
Battery life
2 years (typ.)
Degree of protection
Ambient temperature
0 to 50 °C
Dimensions (W x H x D)
58 x 71 x 97 mm
205 g (incl. batteries)
Radio frequency band
868.0-868.6 MHz/869.4-869.65 MHz
Typ. open area RF range
300 m
M30 x 1.5 mm
Ordering Informations
Product Name
Item Number
EAN Code
Dimesions incl. Packaging
122 x 112 x 97 mm
Weight incl. Packaging
338,6 g
Product Data Sheet
Declaration of conformity