Dawn To Dusk Photocell Switch (Light Sensor) - Automatic Security Lights Switch

A photo electric cell (photocell) or light sensor is a type of a switch that is used to automatically control the actions of a circuit by use of light, both by switching it on and off. They are mostly used to control domestic and public security lights, veranda lights, light houses, and room heaters. Use with a contactor or relay to control high voltage circuits. The effectiveness of a photocell depends on how exposed it is to the natural light and the desired results of each client.