... -phase,voltage,current,power power factor,frequency,watthour,reactive power etc D2011 single-phase multifunctional energy meter YOTO hot ... sellMain introduction:Technical parameters Power AC220V±10% 50/60HzMeasuring itemTRMS,single-phase,voltage,current, ... etcDirect input measuring rangeVoltage:3~300V,4~600V Current:0~2A,0~20AAlarming Relay:NO contactor 250VAC ...