Performance & Advantages High quality with imported or introduced top-grade components PC intelligent auto-control, fully automatic with no manual operation Optimum matching Highly efficient operation Obvious energy-saving effect. Range of Application Stepless speed regulation for various water supply and discharge pumps, open and closed loop auto-control of AC stepless speed regulation for various motors, step-by-step control of soft start and stop for various motors. Technology Parameters Power of Control Motor: 0. 18-250kW Control Voltage: 380V Number of Control Pumps: 1-7 Precision of Pressure Control: 1-5