A nbsp motion sensor light switch is a great way of saving energy shortfall periods nbsp A PIR sensor light switch will automatically detect when someone enters the room or any place where the motion sensor is set Then after a few minutes adjusted by your desires when no movement has been detected the lights will then automatically be turned off Although a motion sensor switch is indeed a big and important invention In fact you can install a motion sensor light switch much in the same way as you would a single pole light switch nbsp Circuit Diagram Motion
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