Motion detectors have the ability to detect small changes in the environment that have been caused, for example, by the movement of the human body.

Consists of two parts that function as traps, one of which is placed on the moving part of the door or window, and the other on the fixed frame.

They operate on batteries without the use of a central unit and usually have a built-in siren.

Alarm center for connecting non-autonomous devices, such as sensors and detectors.