Technical Parameters Rated Voltage 230V 115V Frequency 50/60Hz Rated Current 12A/2HP 20A/1.5HP Min.cut-in 20PSI Max.cut-out 150PSI Pressure Range 20-40,30-50,40-60PSI Inlet Base Metal
Function: 1.start and stop the pump automatically 2.protect the pump from damage caused by dry-running 3.examine the water automatically