Motion sensor(PIR) is a passive infrared detector or physical sensor. This sensor doesn’t emit any energy but only passively receive and detect infrared radiation from outside.

Whenever sensor detects a motion it triggers light to turn on and when there is no motion it makes light to turn off

Motion sensor can also works a security sensor, when you are not at home then if there is any motion happens it Triggers siren and sends you a notification.

This Motion sensor also comes with a Light sensor so you can turn on Lights based on the Light sensitivity

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