... UP-Down, Protection 3.12VDC,24VDC,220VAC,380VAC liquid level water level sensor switch 1. Capacity: 5A,10A 2. Up, Down, UP ... , combined with the upgradeof water level classification through upper and lower pools of water towerof high-rise buildings. ... headFeature Working voltage220VAC/50HZ380V/50HZ220VAC/50HZNOTICE A Liquid level controller always needs three even above probe ...