Tata Power EZ HOME PIR Motion Sensor (PR-46B, 10 A) is a smart energy-saving switch that controls your connected appliances on detection of motion within 8 m (diameter). It detects temperature changes in an area through its infrared sensor when there is movement of the body, and it activates a control signal source to immediately switch on the appliance or light. It also detects daytime and nighttime light automatically. It is easy to install and widely used.