... -6V,9-24V, AC9-24V-220V4.Pressure:10bar5.Metal gear6.Service life: 100000 times 7.Rated Current: 45-100mA 8.Protection ... 1, IC card meters, heat energy meters, air-warm valve. 2, Heating, Ventilation and Air Conditioning and fire work. 3, Water equipment, uto ...