... machines, refrigerators, dishwashers, sinks, aquariums, sump pumps, water heaters, and anywhere with potential water damage2) Specification:Working Voltage: 12VMax. working current: ... happen• Turn off the valve, and connect it to water pipe, to be sure the valve interface can not have ... objects that may cause false warning sound. Intelligent Pipe water leak detecting instrument (with sensor) WLD-805