LS8850000 LeakSmart Pro Automatic Water Shut-Off Valve 2.0 - 3/4" (Includes 4 AA Batteries and an 18-foot Power Cord)
The LeakSmart Valve is an electronic motorized brass ball valve that connects to your main water line. When a leak occurs, it receives a signal and automatically shuts off your houses entire water supply to prevent any further damage.