1. Stainless steel panel, full copper valve, high strength and corrosion resistant. 2. Valve caliber: 1 cun (DN25 diameter 32mm) 3. Working water pressure: 3Mpa-10Mpa, at least 4 tons per hour 4. Waterproof rating: IP23 5. Sensing distance: about 28-80cm adjustable 6. Power supply mode: AC / DC(4 x AA batteries)