For traditional pumps FREQUENCY REGULATOR Max 2.2 Kw For single-phase pump, Max 12 A. 80% ENERGY SAVING With iSAVER+, the speed of the pump can be adjusted for different operations, resulting in a significant reduction in operating costs. 25-35 % SOUNDER. Operation at low rpm is much more pleasant. Not just a frequency converter unit. FOUR TIME PROGRAM SETTING + Backwash function, controls the pump to a higher speed.