... Have CE certificate Class 1 three phase meter MB421GC,energy meter,watt-hour meter Technical parameters:ModelAccuracyReferenceVoltage(V)Currentspecifications(A)Startingcurrent ... passive(polarity),The output rate are 0.01, 0.1, 1, 10kWh or kvarh/Pulse. Users can choose any one ... data communications state. Automatic detection the direction of the flow of load current. And instructions by one LED. Single ...