Automatic Light On / Off To turn on or off the light in day and night automatically without any manual operation. Do not install the control unit in a place extremely darker in daytime or a place directly by lighting to turn - 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. Easy to install and convenient to use Input Voltage: AC220V Max Load Current: 10A Frequency:50-60Hz Note : wrong connection may damage your device. Great care must taken while working AC High voltage !