Bosch Radiator thermostat II

Bosch Radiator thermostat II
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Key features
  • Individual time control for temperature in every room
  • Detects temperature drops and adjusts the heating temperature to save energy
  • Protected communication with secure radio protocols
  • A frost protection program is started automatically at temperatures below 4°C
  • Regularly opens the valve to protect against calcification
Product overview
  • Type: Radiator thermostat
  • Compatible With: Alexa ready
Product codes

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Product Description


Smart thermostats – heat your home the modern way

Turning radiators up and down was yesterday! Control your heating effortlessly and precisely via app – wherever you happen to be. With your Smart Home radiator thermostat, you can heat your home more conveniently and more efficiently. For the environment and your pocket.

Keep track of the temperature

With your smart thermostat, you can adjust the temperature in each room individually to the nearest half a degree and can keep track of current temperatures at any time via the app.

Energy-efficient heating

The Smart Home radiator thermostat makes it easy to save energy: Thanks to time programs and clever services such as "Sustainable ventilation", you can heat your home just enough to feel comfortable.

Combined room temperature

A number of smart thermostats within a room can be combined in the app to give an overall room temperature and controlled in groups – optionally particularly precisely with a room thermostat .

Control heating flexibly – via voice, app etc.

Whether you use Alexa, Google Assistant or Siri in the Apple HomeKit – your Bosch Smart Home radiator thermostats can easily be controlled via voice commands:

"Alexa, set the temperature in the living room to 22 degrees."

In addition to voice commands, there are many other ways to regulate your smart radiator thermostats:

Sustainable ventilation saves energy

The pre-configured "Sustainable ventilation" service is the star among the fully automatic control systems for smart thermostats. It links your door/window contacts to the heating control system:

If your door/window contact detects that a window is open, the smart radiator thermostats automatically turn down the heating in the room – this is also possible after an individually adjustable delay, e.g. if you only open your windows briefly to let your cat out.

Your device lights up blue and red to show you the start and end of the heating break during ventilation.

This way, none of the heat goes out the window and you save energy

The color indicates the heating status

Not only the link to your Smart Home system makes your heating thermostat smart – it stands out from conventional devices in design terms too:

Thanks to its compact size (87 x 51 x 51 mm (LxWxD)) and swivelling display, it fits discreetly into your living room – either horizontally or vertically mounted.

The high-contrast display with background lighting guarantees optimum legibility whatever the lighting conditions are.

Practical: The light ring with multicolored LEDs can be seen from all angles. It indicates actions performed and the status of the thermostat.

Using the child lock

Children’s hands on radiator thermostats often lead to incorrect settings and wasted energy. But there is no need to sweat (or freeze) as a result:

Specify in the app or using the operating button on the device that manual settings on the device itself are no longer possible.

This way, kids cannot adjust anything on the smart thermostats – and you can still control the room temperature conveniently via app, voice assistant or room thermostat.

Protective functions you can rely on

Could you be left in the cold if your heating breaks down? Not in a smart home! Your radiator thermostats feature a number of protective functions to minimize the risk of a breakdown:

Frost protection: Prevents damage to radiators owing to open windows or unused rooms.

Limescale protection: To prevent limescale from forming in your thermostats outside the heating period, the valve opens briefly once a week throughout the year.

Battery warning: If the two AA batteries which can easily be replaced are getting low, you will be given a warning via app several weeks in advance so that you can replace them in good time.

Breakdown warning: Do you want to be on the safe side? You can also create an "IF room temperature <15° THEN send message" automation.

Easy to install

There is no need to be a heating expert to make your radiator thermostats smart.

Bosch Smart Home thermostats can be installed quickly and easily without a fitter – the step-by-step instructions in the app guide you through the assembly process and, thanks to the two AA batteries supplied, your thermostat is ready for use straight away.

The smart thermostats fit almost all radiators: Either directly with M30 x 1.5 mm screw threads or with the help of the adapters supplied (Danfoss RA, Danfoss RAVL).



Product Description Bosch Smart Home Smart radiator thermostat II - radiator thermostat - ZigBee 3.0
Product Type Radiator thermostat
Integrated Components Display
Power Source Battery
Intelligent Assistant Alexa ready
Connectivity Wireless - ZigBee 3.0
Frequency Band 2.4 - 2.4835 GHz
Manufacturer Warranty 2-year warranty
Dimensions (WxDxH) 5.1 cm x 8.7 cm x 5.1 cm

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Item condition
Ref: GYQ3 046789
Ref: GYQ3 046789

What does this mean?

  • This part of the stock item is present and in good condition
  • This part of the stock item is not present or functional
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Bosch Radiator thermostat II