Wateralarm is recommended to guard against leaks and over flow from water heaters, dishwashers, washing machines, sinks, lavatories, refridgerators, water filters, toilets, water softeners and sump pumps. The 110db alarm can be heard throughout the house, detecting leaks before it causes costly damage. No installtion required; just place on the floor near water sources and it will detect as little as 1/32" of water. For functionality purposes the sensor wire can extend 6' for hard to reach areas.