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.

Save energy and get more security.

While you're out, it suddenly starts pouring with rain and you wonder if all the windows - especially the skylights - are closed. Should you rush home just in case? Not if you've installed the Homematic IP window / door contact. This allows you to easily check in the app whether all windows are closed when you're out and about. And by the way, you can also integrate this all-rounder into your Homematic IP security or heating function.

Monitoring for a secure home

You can immediately detect the opening or closing of windows and doors via the Homematic IP app.

In combination with Homematic IP alarm sirens (e.g. HmIP-ASIR-2), your home becomes even more secure. Because this automatically triggers a loud alarm when a window or door is opened.

Fresh air without wasting energy

The room temperature is automatically lowered during ventilation if you connect the window / door contact to a Homematic IP radiator thermostats.

You can even individually define the lowering temperature. The comfort temperature is automatically restored as soon as you close the window.

Flexible control possibilities

Use the window and door contact with magnet individually (in stand-alone mode) or as part of your smart home system.

In stand-alone mode: Simply combine the contact with a radiator thermostat (HmIP-eTRV-B) and a wall thermostat (HmIP-WTH-B).
As part of a smart home system: The Homematic IP access point and the free app form the basis of your smart home. You can use it as a smart addition to your window / door contact with magnet as well as many devices in your home.

Everything in view when you leave the house

In the Homematic IP app you can always check whether all windows are closed - even when you're out and about.

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.

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!

Smart helpers for your home

With over 150 smart helpers, we have the right solution for every idea. Follow our recommendation or explore the entire Homematic IP product range.

All products

Radiator thermostat – basic

Control your radiators the smart way - to ideally suit your daily routine With the radiator thermostat - basic, you decide whether you want to control the radiator directly on the device or prefer to use the app.

Alarm Siren

If someone tries to enter your home without permission, our smart alarm siren will signal this loudly and immediately.

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.

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.

Homematic IP

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!

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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 – no personal data is collected, other than the IP address.

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Homematic IP Wired

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.

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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.