Floodstop for Washing Machines, FS 3/4-H90 Version 4 This washing machine leak detector will detect a leak, sound an alarm, and automatically turn off the water supply to the washing machine to prevent further damage Components: 90 Degree Motorized Ball Valves (Two valves, 3/4 inch Hose Threaded with union), Water/Leak Sensor (1.25 X 7.5), and AC Power Adapter. Prevent water damage from flooding and leaking washing machines Easily installed in ten minutes and has a one year manufacturers warranty Four AA batteries can be used as backup or primary power supply