The FloodStop for Water Heaters Kit automatically shuts off the water supply to the water heater and sounds an alarm, leaving all other household fixtures and appliances operational. Furnish and install point-of-use leak detection with audible and visual alarm, plus automatic water shut-off system designed for residential and commercial buildings. Maintenance-free, auto-cycling motorized ball valve automatically shuts off the water supply whenever the appliance or hoses leak. Kit includes: Full Port Motorized Ball Valve: CNC machined. Motor operates at 6VDC.; 1.25 X 7.5 inch, double sided water sensor; Control Unit mounted with screws or Velcro (included); UL listed class 2 wall adaptor, 115AC/9VDC. Optional Power Sources: (4) AA Batteries (not included). Includes one year manufacturer warranty.