Driak AC/DC12V AS-20 Waterproof Auto On Off Light Switch Photo Sensitive Control Sensor for Streetlight Gardenlight Rainproof performance, more suitable for outdoo To turn on or off the light in day and night without manual operation Two options:Adjustable sensitive.adjustable photoreceptor 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