FRITZ!DECT 400 Service - Overview

FRITZ!DECT 400 Service

The FRITZ!DECT 400 smart switch gives you full control of your Smart Home - all at the touch of a button! Easy to set up and use, you can turn your lights on and off or manage your home's heating.

Smart Home

Make your house a Smart Home with FRITZ!.

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Knowledge Base


Got a question about your FRITZ! product? Download the manual for step-by-step instructions and extra information.

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FRITZ! Clips

Take a look at our short videos for more on how to use your FRITZ!Box and a host of practical tips.

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Handy apps add new features to your FRITZ!Box, smartphones and tablets. They're available as free downloads for iOS and Android.

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