A motion sensor (or motion detector) is the linchpin of your security system, because it's the main device that detects when someone is in your home when they shouldn't be. A motion sensor uses one or multiple technologies to detect movement in an area. If a sensor is tripped, a signal is sent to your security system's control panel, which connects to your monitoring center, alerting you and the monitoring center to a potential threat in your home.
Alert you in the event that your teen breaks curfew
Trigger a doorbell when someone approaches the front door
Alert you when kids enter restricted areas in the home, like the basement, workout room, or medicine cabinet
Save energy by using motion sensor lighting in unoccupied spaces
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