Motion detector instead of light switch

The motion detector is often used to replace the light switch with a non-contact circuit. The purpose is to increase the ease of use. But it is not always good to operate a consumer only with the motion detector instead of a light switch.

Connecting a motion detector

You can use a motion detector to activate a consumer, such as an outdoor light, without having to operate a light switch. Not infrequently, a motion detector is connected so that no operation via a light switch is more planned.

Why motion detectors never install instead of with light switches?

That may be an advantage at first. But it may well be that a motion sensor should be operated manually. For example:

  • to completely switch off the detector
  • to be able to switch on the consumer independently of motion
  • to permanently switch on a consumer

The motion detector instead of the light switch has its authorization. The motion detector also increases personal safety. But there are just these exceptional situations in which a motion detector should be manually switchable.

Compromise: Light switch for manual operation as an exception

Therefore you can make a compromise. Simply integrate one or two (or a multiple switch) light switch into the motion detector installation. You can then switch the motion detector to turn it on. You can also switch off the motion detector permanently via another connection scheme. For both connections, we offer the appropriate guides in the house journal.

Switching the light switch on or off

Alternatively, you can also install a motion detector, which also has a switch for switching on and off. In particular higher-quality detectors are equipped with such additional functions. However, a complete omission of a light switch is never advisable, as it can always come to extraordinary situations as already described.

Switching on the load should be possible

If necessary, you could deactivate a motion detector via the relevant house fuse. When switching on, however, there is no other option without bridging the motion detector - apart from a mobile luminaire, which you would have to set up extra.

Tips & tricksOne special feature is the installation of a motion detector in connection with a timer, for example in a stairwell with automatic time-based light shutdown. Again, you can install a detector. However, it must be compatible with the timer. These should be timers and motion detectors with impulse function.
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