What is a Motion Sensor and How Does It Work?

A motion sensor is a device that detects physical movement within a given area. In a household setup, a motion sensor is mainly used for security, turning on smart lights, and as an integral part of a motion sensor based automation system. Using a motion sensor, detecting stationary gas or people becomes more efficient.

Motion sensors scan the area to identify specific processes as changes with in it. Below indicates the most common forms of motion sensor technology:

Passive Infrared (PIR) motion sensors: Recognize heat emitted from the human body.
Microwave motion sensors: Use microwave pulses to identify motion.
Dual-technology motion sensors: Combine multiple techniques to decrease false alarms.

Residential and commercial buildings, factories, and warehouses are all examples of places where a motion sensor is applicable.