... , mutual inductor.Available for measuring 7parameters. EU8E/EU80E Series Single Phase Digital Kwh Meter Features:1) Power supply: AC/DC ... Accuracy: ±0.5% F.S4) Available for measuring voltage,current,power factor,Kwh, frequency Hz, total 7 parameters5) 4~ ... 20mA transmit output for voltage, current, power factor, frequency6) RS485 communication interface, Modbus RTU protocol7 ...