AC DC 220V 10A Auto On Off Photocell Street Light Photoswitch Sensor Switch #1 To turn on or off the light in day and night without manual operation. Do not install the control unit in a place extremely darker in daytime or a place directly by lighting of turning - ON lamp. Widely used: street light, highway, factories, garden, ports, airports, farm, parks, schools, and other places. Also can fit into solar lamps and lanterns, or cars, motorcycles, electric cars and other power supply voltage is 12V lamps and lanterns or equipment. Easy to install and Convenient to use. Brand new and high quality.