A motion detector is an electrical device that utilizes a sensor to detect nearby motions (motion detection). Such a device is often integrated as a component of a system that automatically performs a task or alerts a user of motion in an area.
A motion detector is an electrical device that utilizes a sensor to detect nearby motions (motion detection). Such a device is often integrated as a component of a system that automatically performs a task or alerts a user of motion in an area.
Source: Wikipedia "Motion detector" · CC BY-SA 4.0
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