ITEM NAME:Auto On Off Photocell street Light Switch DC AC 220V 10A FT Features: 100% quality and Brand new. 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. Rainproof performance, more suitable for outdoor Specifications: Input Voltage: DC12V Max Load Current: 10A Frequency:50-60hz Power Consumption :max 0.5w Operation Lumination Turn on :Less than 30lux Turn off :Less than 150lux Caution The control unit may be damaged by misconnecting When installing in daytime . the unit may turn-on first , then Turn off within 3 minutes , this is normal operation Summary The product Can turn on or turn off light according to ambient -light ;Ambient-Temerature and humidity can not affect it . It is not only convenient But also practial. It can control the load working only at night . for instance road light . garden light etc Notice: 1:In front of light control switch there should be no obstrution  affecting it to accepte natural light.Max Load Current: 10A. It is not only convenient But also practial. Turn off :Less than 150lux. the unit may turn-on first, then Turn off within 3 minutes, this is normal operation. Turn on :Less than 30lux.