Floodstop Is A Point Of Use Leak Detection And Automatic Water Shut Off System Designed For Commercial And Residential Dwellings Motorized Valves Are Used To Automatically Shut Off The Water Supply Whenever A Leak Is Detected Installs In Minutes Additional Sensors May Be Added In Series Optional Power Sources: Ac Batteries Or Both Control Unit Can Be Mounted With Screws Or Velcro (Included) Alarm: Beeping With A Mute Button