CO2 sensor, 230 V

Reliably measure the amount of CO2 in your room. The CO2 sensor displays the result via five LEDs, and of course also in the Homematic IP app .

Always have an eye on the air quality

Your friends are visiting in the evening or you're in your home office all day - the at some point air in the room seems stale. But mostly you only notice it when you get tired from it. With the Homematic IP CO2 sensor, the app will indicate it to you early. The five integrated LED lights also show you the status in your location: The worse the air, the more lights are switched on. Only one LED lights up if the air is of the optimum quality.

Sensor mit Haken

A versatile sensor for more well-being

The sensor measures the CO2 content in ppm (number of CO2 molecules in one million air particles) as well as the temperature and humidity in the room.


The measured room air values are displayed for you via the Homematic IP app and are always up to date.

Haken mit Funkwellen

Easy installation

Integrate the CO2 sensor easily into existing switch series (with 55 mm frame size) from the most popular manufacturers. The sensor's design is specially made for this.


The compact design helps with easy installation in standard flush-mounted boxes. The screwless spring-loaded terminals make installation even easier.

Icon Layer

LED display to indicate CO2

The five integrated LEDs show you the CO2 level directly on the device.


One illuminated LED indicates very good air quality, whereas five illuminated LEDs indicate a very high CO2 level. You can also for example automatically switch on a light to provide an alarm when a defined CO2 level is exceeded.

360 Grad 3D

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.

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!

Control access

Deter burglars

Homematic IP Alarmsirene außen an Hauswand

Use the app

Understand our products


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. 

With some smart home providers, you have to make a choice: Do you have everything wired, or do you go fully wireless? Some systems are also hermetically sealed and do not accept devices from other manufacturers. Here at Homematic IP, we have a different approach. We are guided by you!

The Homematic IP app

Configure all the settings for your smart home in the Homematic IP app, and use it to control, regulate and monitor your devices whenever you want – without providing any personal data!
A smart home system is particularly robust, interference-proof and reliable when the devices communicate with each other via wired connections. And data transmission is very fast with cables, too. That all comes together with Homematic IP Wired.

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.



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



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.

Installateur Suche

Specialist tradespeople

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

Händler Suche


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

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