Watts A2C-M1 IntelliFlow Automatic Washing Machine Water Shutoff Valves with Leak Sensor, &frac12;-Inch WASHER WATER SHUTOFF VALVE: The Watts IntelliFlowAutomatic Washing Machine Water Shutoff Valves with Leak Sensor are used in residential applications to protect against potentially catastrophic water damage due to a burst inlet hose connected to a washing machine - whether in use or unattended AUTOMATIC WATER SHUTOFF VALVE: Automatic water shutoff valve(A2C-M) is equipped with a state of the art electric current sensing device. When the washer is turned on, the device senses the current flow to the washer and opens the valves. EASY TO INSTALL: It is easy to install and has silent reliable operation. WASHING MACHINE WATER SHUTOFF VALVE: It consists of an electrical three-prong outlet to receive a washing machine power cable, leak sensor, a power cord, and a replaceable internal strainer screen. SHUTOFF VALVE WITH LEAK SENSOR: If the Series A2C detects a leak, current flow to both the hot and cold water valves are immediately interrupted and closed.