Zone Water Leak Sensor for Sensaphone FGD Monitors Has Water Rope 10 Ft Long FGD-0056 zone water leak sensor with 10 feet length of water cable helps protect floors or false ceilings from water damage. Use with all Sensaphone products including Model 800 (not included) that give phone alerts if detects moisture or water on a floor or false ceiling. Zone water leak detector with 10 feet of Water Rope cable covers a larger area than the FGD-0013 water spot sensor. NOT Compatible with IMS System : use with FGD units. Zone Water Leak Detector FGD-0056 Specifications: Up to 10 water ropes can be added to one sensor for up to 100 feet of coverage. Works with all Sensaphone products. Detects the presence of water in a flat area. Additional 10 of Water Rope, order part #FGD-0063. This water detection/water leak sensor operates on two AA batteries. When the batteries start to run down, the sensor will automatically send out an alarm. That way you have an opportunity to replace the batteries when no water is present.