We are offering fully automatic water level controller.Switch on the pump when water level in overhead tank goes below the pre-decided minimum level. Switch off the pump when water level in the overhead tank reaches the pre-decided maximum level.Suitable:- contactor type panelno volt coil contact less than 3amp.Push button auto start time 2-sec.Connection terminal:- 2 - main supply, 2- no volt coil, 4 - start push button, 3-water tank.= 11-wiredimensions in (mm):-w-155, h-210, d-110.