... DW9L series 3 phase multi-function power meter:1) To measure: Voltage, Current, Active Power, Reactive Power, Power Factor, Frequency (Hz), Kwh, 4 Quadrant Energy ... for Voltage, Current, Power Factor, Active Power, Reactive Power;7) Transformed analog output 4-20mA for voltage, current, active power, reactive power, frequency, power factor;8) With RS485 ...