... ,amps, active power,reactive power,power factor,Hz, kWh,kvarh,harmonic,RS485/Modbus, CE certify PMAC720 Multifunction Power Meter detailed description:Harmonic Power Analyser: Outstanding ... More than 30 parameters measurement, two RS485 communication are supported* Power supply: 85~265VAC, or 80~300VDC*Programmable CT (1 ~ ... an extend module)*CE certification, IEC61000 PMAC720 RS485 modbus power meter