Weißer Heizkörperthermostat am Heizkörper, unscharfer Flur im Hintergrund.

Radiator thermostat – basic

Control your radiators smartly according to your wishes. With the radiator thermostat - basic, you can get started in the Smart Home in no time at all.

Smart heating has never been so easy

The Homematic IP radiator thermostat - basic is the ideal start to smart, energy-saving living. Thanks to a preset heating profile, the device is immediately ready for use, without any further configuration. Simply unpack, connect and benefit from the intelligent technology. Advanced users adapt the heating behaviour perfectly to their individual needs with three adjustable heating profiles and 13 possible changes per day. This way you can save up to 33 %* on heating costs.

Comfort temperature at any time

Control the room temperature according to your needs - at home and when you're out and about.

You can do this easily via the app, directly on the device or very conveniently via voice control (using Amazon Alexa or Google Assistant).

Safe and easy operation

Installation is quick and easy with no need to interfere with the heating system or to drain water.

A high-quality union nut is supplied for secure mounting on all common radiator valves with a M30 thread.

Flexible control possibilities

Use the radiator thermostat by itself (stand-alone operation) or as part of your smart home system.

In stand-alone operation: Manual adjustment and operation possible directly on the device If you like, you can combine the radiator thermostat with up to eight window and door contacts (HmIP-SWD) and a wall thermostat (HmIP-WTH-B).
As part of a smart home: Lay the foundation for your smart home with the Homematic IP access point and the free app: Your radiator thermostat is integrated into it, and you can add a smart function to many devices in your home.

The easy way to save on heating costs and CO₂emissions

You can easily set the individual temperature curves in the Homematic IP app.

Up to three adjustable heating profiles and 13 changes per day allow you to have the heating on only only when you want it.

Window open detection

If a window is opened in your home, the radiator automatically lowers the temperature to save energy.

Notice open windows and doors with the open window detection function, or with even greater precision by using a Homematic IP window and door contact.

Händler finden

Installationspartner finden

Controlling the product via the free smartphone app and the toll-free cloud service requires connection to the Homematic IP Access Point.

Our products in a new dimension.

Rotate the product in all directions, zoom in and experience it in three dimensions. This gives you a detailed picture of your favourite products.

Tutorial: How to teach-in devices for room climate control

With Homematic IP controlling the room climate is easy. In this video we show you how to teach-in devices for room climate control like for example a radiator thermostat or an optical sensor that detects if the window is open or closed.

Your advantages at a glance

Do you want to live more safely, save money and protect the environment, or simply increase your living comfort? There are many good reasons for a Smart Home. Find out more now!

Your advantages at a glance

Do you want to live more safely, save money and protect the environment, or simply increase your living comfort? There are many good reasons for a Smart Home. Find out more now!

Wall thermostat – basic

Keep an eye on the temperature, and ensure the smart way that your home is always properly heated. That's easy with the wall thermostat – basic.

Window/door contact with magnet

Detect open windows directly thanks to the window / door contact with magnet. You can also connect the product to your smart heating or alarm function. For even more advantages.

Starter set

Starter Set Climate Control – WLAN

Control your room climate the smart way and exactly as you want it. The Starter Set Climate Control – WLAN also saves you valuable heating costs.

Homematic IP: Smart living. Simply exciting.

Homematic IP means modern, flexible and secure technology from the European market leader*. Let the advantages of our system win you over, and start living smarter straight away.

Person auf Sofa hält Smartphone mit geöffneter Homematic IP App, gemütliches Wohnzimmer.

The Homematic IP app

Configure all settings for your smart home in the Homematic IP app, which you can use to control, regulate and monitor your devices at any time. No personal data is collected except for the IP address.

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Always here for you and your queries.

Whether you have a question about a product, something isn’t working as you wanted, you’re looking for a specialist partner, or you simply want to give us feedback: we are always here to help.

FAQs

This is where you’ll find the most important questions and our answers about our smart home solutions.

All FAQs

Service

Have you purchased a Homematic IP product and now have questions about how it works? Our technical support team will be happy to help you.

Service

Specialist tradespeople

Are you looking for a good specialist tradesperson near you? Simply use the convenient search function here on our website.

Find a specialist tradesperson

Dealers

You can get Homematic IP products and good advice all over Germany. Find the right dealer near you here.

Find a dealer

Innovations, ideas, impulses: your news

Get first-hand news about the latest innovative smart home solutions.

View all news

Alle News ansehen

Use Cases (field_use_cases)

Invisible and intelligent: Compact flush-mounted switch actuators for smart retrofitting

The new Homematic IP switch actuators fit even in the smallest flush-mounted box. This turns any building into a smart home.

13. August 2026

New Energy Management features for the Homematic IP Home Control Unit

The EEBUS plugin for the Homematic IP Home Control Unit now supports the LPC and LPP functions for automatically limiting power consumption and power feed-in.

11. August 2026

Systematic security: fully integrated Homematic IP camera family now available

The new Homematic IP security cameras are part of a comprehensive smart home ecosystem. With just one app, users have access to all features and can keep an eye on their smart home at all times. Rigorous data protection and secure encryption ensure complete peace of mind.

31. July 2026

Smart home control at the touch of a finger: Homematic IP Glass displays now also available for wireless installations

The high-quality Homematic IP Glass displays are now also available in wireless versions. This means that, for the first time, these versatile touch displays are also available for smart home installations without bus cabling.

22. July 2026

* In combination with window and door contacts and depending on user behaviour, structural conditions of the building and the existing heating system.

Order information

Product Name (Short)

HmIP-eTRV-B

Item Number

153412A2

EAN Code

4047976534128

Technical data

Supply voltage

2x 1.5 V LR6/Mignon/AA

Current consumption

100 mA max.

Typical battery life

2 years (typical)

Degree of protection

IP20

Dimensions (W x H x D)

57 x 68 x 102 mm

Ambient temperature

0 to 50 °C

Weight

185 g (including batteries)

Radio frequency

868.0-868.6 MHz/869.4-869.65 MHz

Typ. open area RF range

250 m

Connection

M30 x 1.5 mm

Voraussetzungen

Operation requires connection to one of the following solutions:

Homematic IP access point with free smartphone app and toll-free cloud service
Central CCU3 with local user interface WebUI (no longer compatible with central CCU2)
Third-party partner solutions

Other

To enable operation, the device has to be connected with one of the following solutions: Stand-alone (push-to-pair), Homematic IP Access Point with free smartphone app and free cloud service, Third-party solutions of partners

Function type

Radiator Thermostat

Connection

Wireless

Push-to-Pair

Color

white