The LeakSmart Valve connects directly to the main water supply and automatically shuts off the water in less than 5 seconds in the event of a leak. The LeakSmart Valve is a full-port brass valve. Every 22 days the valve automatically conducts a cleaning cycle.Patented, motorized, solid brass full port valve with a brass stem and chrome plated brass ball that turns off the main water supply within 5 seconds of a leak being detectedColored green and red LED lights on display indicate open or closed valve statusAccommodates different pipe installations male and female NPT threaded, Pro – Press connection or PEX tubing and materialsAutomatic 22-day cleaning cycle to prevent mineral build-up and ensure system checkComes with battery back-up in case of power outage. This product can expose you to chemicals includingphthalates and lead which are known to the State ofCalifornia to cause cancer, birth defects or otherreproductive harm. For more information go towww.P65Warnings.ca.gov