Prevent flood damage and avoid dear repairs with the easy-to-install, newly designed black lead unoccupied Water Heater Auto-Shutoff. This system not merely leaks proto, but it automatically shuts your water off in the event of a leak, alerting you with the hold panel 's alarm. for both act and trade dwellings. The FloodStop -LRB- FS 3/4-NPT -RRB- automatically shuts off the water supply to the Water Heater and sounds an alarm, leaving all other than household fixtures and appliances serviceable. This kit everything you need to protect your property from dear water-leak damage : bimotored Full-Port Ball Valve -LRB- 3/4 inch NPT pipe rib -RRB-, a water sensor to be placed on the floor, and the hold unit, which is mounted to your wall with the included screws. A power supply is ; you need to also install four AA batteries -LRB- not included -RRB- for backup power, unit will beep to lively you of miserable or no batteries. The controller has `` one '' output -LRB- normally public -RRB- that can be attached to a dialer or security system so you can be alerted to a leak when not home ! . You can even triplex water sensors for distinguishable areas around your water heater. If your water heater should begin to leak, the controller the water valve to tight and alerts you with an 87db alarm.