Micro-computer Control Perfect leak detection function Support internal battery or external connection adapter Main Features: >> Micro-computer Control>> Adopt the reliable impulse-type valve for water controlling>> LED indicator and Audio alarm>> Quick connecting for setting>> Leak Control System inside>> Perfect leak detection function>> Support internal battery or external connection adapter>> Button Reset function>> Absorbent sensor mat Main advantage:  >> Stable and reliable Quality>> Visible and audible work process>> Low power consumption and Perfect leak detection control>> Fast installation without the need of professional>> Able to connect many sensors in a controller>> Able to connect multiple electrical appliance and equipment>> Easy in replacing battery Specification:  >> Internal impulse-type valve: Output Power (Max.) 3W>> Battery life: 2 years (normal condition)>> Inlet Pipe Dia.:  2” quick connecting>> Outlet Pipe Dia.:  2” quick connecting>> Input water pressure: 0.02-0.8Mpa>> 4 x “AA” Alkaline batteries:  4 x 1.5 V