Turning the screw to the "up" position enables manual reset

Key Benefits: Precision Pressure Control: Pre-calibrated at 384 PSI (Open) and 309 PSI (Close) for accurate system cycling and safety

The actuator should not be mounted below the horizontal plane to prevent moisture buildup in the housing

the diaphragm or contacts have likely failed

Watts 0121580 Detector 320788-704 Turning the screw to theThe Watts 0121580 LFWDS E220 is a specialized 3 4 inch water leak detection system designed to protect residential and commercial properties from catastrophic water heater failure. Operating on 220V power, this lead free unit is engineered for electric water heaters, providing a dual action response by simultaneously cutting the incoming water supply and the electrical power source upon detecting moisture. Unlike basic sensors, the LFWDS E220 utilizes