Door lock sensor

See in the app if you've really locked the door. You can do that with the Homematic IP door lock sensor.

Keeps track of your door lock

Did I really lock the front door? The Homematic IP door lock sensor frees you once and for all from this nagging uncertainty, because the sensor detects at any time whether the door lock is locked or unlocked. Monitor your door in the Homematic IP app and check every opening and closing in the detailed event log.

Always know whether the door is locked

When you're out and about, check via the Homematic IP app whether your front door is locked.

And every time the door is locked or unlocked, it's recorded in the Homematic IP app’s event log. With the "secured locking" function, you can also see whether the door is open or closed in conjunction with a door and window contact.

Turns the key into a smart knob

Your key is transformed into a practical turning knob in no time with the door lock sensor.

The key simply turns with the door lock sensor. This means it’s still very easy to lock and unlock the door by hand.

Visual matching to your door fittings

Two caps in white and silver are included.

Provides more security

Just combine the sensor into your security solution.

When alarm mode is activated and when the door is unlocked

either Alarm mode is automatically deactivated or
an alarm is triggered.

Easy retrofitting

Simply insert your key into the door lock sensor and both together on the inside of the door into the lock - without drilling or screwing and completely invisible from the outside.

Thanks to its universal design, the device fits on all common key types for standard lock cylinders with emergency function. To lock or unlock the door from the inside, simply turn the door lock sensor in the corresponding direction like a knob.

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Does my key also fit in the door lock sensor?

We've developed a template so that you can be sure that your key also fits into the smart door lock sensor. Simply print it out in its original size and place your key in the space provided.

Key template download

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!

Door lock drive

Make your front door smart quickly and easily with the door lock drive. Then you can lock, unlock and open them automatically as you wish or depending on the time of day.

Alarm Siren

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

Switch actuator for brand switches – with signal lamp

Conveniently switch all devices in the home and let the signal lamp display different scenarios with certain colour combinations. To do this, simply install the switch actuator for brand switches.

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.

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.

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.

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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