What is a door contact ?
The door contact is a means by which the door or window is monitored. It consists of two elements: a contact and the magnet. Installed one next to the other, the door contact on … Read more
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What is a motion detector ?
Also called a motion sensor. Motion detectors are a modules that monitor the movement of objects in an environment. They are a key element in the alarm system industry.
Motion sensor detects … Read more
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