... series 3 phase multi-function power meter:1) To measure: Voltage, Current, Active Power, Reactive Power, Power Factor ... Transformed analog output 4-20mA for voltage, current, active power, reactive power, frequency, power factor;8) ... accuracy class 0.5Frequency45-60Hz, accuracy 0.1HzPower Active / Reactive / Apparent power, accuracy 0.5%F ... ≤7VA DW9L 3 Phase Digital Active Power Meter / Smart Energy ...