Contact interface

Make glass breakage detectors and magnetic contacts smart and detect glass breakage of your windows or doors in the app - with the Homematic IP contact interface.

The smart way to monitor window glass

You want to know that your home's secure - whether you're at home or out and about. You can do this when you're in by monitoring your windows and doors with glass breakage detectors or magnetic contacts. Unfortunately though most of them aren't smart, and if you're out you'll be lucky to find out about glass being broken by a burglar, for example. With the contact interface of Homematic IP, you can retrofit a smart function into your windows and doors so that you'll always be aware of their status.

Monitoring for a secure home

Broken window and door glass is detected immediately and displayed in the Homematic IP app.

Combine this with a IP alarm sirene (e.g. HmIP-ASIR-O) to make your home even more secure. A loud alarm is triggered when glass breakage is detected.

Flexible installation

Connect the contact interface to a conventional wired glass breakage detector or magnetic contact and place the interface anywhere inside the room.

Radio communication and battery operation allow you to flexibly and easily mount the device on a wall or on a window or door frame. The relevant installation material is included.

Reliable operation

The contact interface runs autonomously without the connection to the power supply.

This is made possible by battery operation with a service life of up to 4 years.

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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!

Alarm Siren – outdoor

Get a loud acoustic signal when someone tries to enter your home without permission. Install the smart outdoor alarm siren, and you’ll be able to keep an eye on everything via the app.

Window / door contact – invisible installation

For more security and energy-efficient heating, install the window and door contact suitable for concealed installation.

Motion Detector with Brightness Sensor – indoor

Detect movement in your home with the freestanding indoor motion detector, and use it to connect your lighting control or alarm mode in the smart home.

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 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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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.

FAQs

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

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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.

Specialist tradespeople

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

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Dealers

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

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Innovations, ideas, impulses: your news

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

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Use Cases (field_use_cases)

Homematic IP showcases more than 20 innovations at Light + Building 2026

When the Light + Building electrical trade fair opens its doors in Frankfurt am Main from March 8 to March 13, 2026, Homematic IP will once again be a major player.

05. February 2026

New 6-way wall switch with LED lighting for Homematic IP

The new wall switch combines the proven Homematic IP wireless technology with a fixed 230 V power supply, making it ideal as a smart alternative to the classic light switch.

30. January 2026

Because security is no coincidence: Homematic IP certified by the VDE for the ninth time

Homematic IP remains a pioneer for security and data protection in the connected home. The smart home solution from the German manufacturer eQ-3 has been certified by the VDE for protocol, IT and data security for the ninth time in a row.

19. December 2025