... , kWh,kvarh,harmonic,RS485/Modbus, CE certify PMAC720 Multifunction Power Meter detailed description:Harmonic Power Analyser: Outstanding flexibility and accuracy designed ... ,3P, 3Q, 3PF, 3F, ±kWh, ±kvarh) in single and three phase system. It offer RS485 serial to link with PLCs, PCs ... there is an extend module)*CE certification, IEC61000 PMAC720 multifunction 3-phase Moduba RS486 panel meter