USA HISTORY

Detailed explanation-1: -A motion sensor uses one or multiple technologies to detect movement in an area. When a sensor detects motion, it sends a signal to your security system’s control panel, which connects to your monitoring center. This alerts you and the monitoring center to a potential threat in your home.

Detailed explanation-2: -Motion detection devices are part of most alarm systems. There are many different types of motion detectors and a variety of sensor technologies: ultrasonic waves, infrared light waves, microwave (electromagnetic) fields, and passive infrared (heat sensors).