... , refrigerators, dishwashers, sinks, aquariums, sump pumps, water heaters, and anywhere with potential water damageProtects you home by keeping the leak alert ... Put the water sensor on the place where water leakage may happen • Turn off the valve, and connect it to water pipe, to be ... OFF, the central unit will still operate, detect water leakage and sound warning tone but the sound level is a ...