The so-called pyro sensor is the heart of the infrared sensor technology. It responds to the body heat of a person, which is emitted in the form of infrared radiation. In this way, it detects the movements of persons within its detection zone and can react to these accordingly. The changes in the infrared heat radiation are converted into an electronic signal. The light is switched on via this switching signal.
Passive infrared sensors from STEINEL are proven all-rounders for use indoors and outdoors. They are not affected by damp, cold weather. They have a reach of up to 20 metres, and can therefore monitor large areas reliably - even at great heights.