Basement watchdog, water alarm, detects unwanted water only 1/32" deep, alarm is placed on the floor near water heaters, sump pump pits, washing machines and under sinks, sensor has a 6' wire so it can be extended into a sump pump.
From the Manufacturer
Minimize the risk of water damage with this early warning system For installation in sump pits or near areas requiring water monitoring like hot water heaters, air conditioners, washing machines or under sinks. Requires a 9-volt battery (Sold separately). Solid state circuitry is extremely sensitive and reliable. Detects water only 1/32-Inch deep when the alarm is placed on the floor. The Sensor has a 6-foot wire so it can be extended into a sump pit, or mounted on a wall and stretched to another location. (Accommodates the addition of more than 100 feet of wire, if needed). Loud 110dB alarm can be heard throughout the house. Battery-saver feature keeps batteries fresh longer. for 24 to 48 months