... is kWh, record accumulated total active energy.Display range: 5+1, 6+1Accuracy active energy measuring, no need degugging for ... to IEC62053-11 standardAccording to IEC62053-21 standardFUNCTIONS:Total energy= positive active+negative active Indicate of reverse measuringDisplay data ... :50Hz, 60HzStarting current: 0.004IbConnection type choice: single phase two wires, L, L, N, NL,N,N,LImpulse constant ...