... 3 phase multi-function power meter:1) To measure: Voltage, Current, Active Power, Reactive Power, Power Factor, Frequency (Hz), ... Kwh, 4 Quadrant Energy, etc. Total 28 electrical parameters;2) 240*160 dot big LCD ... output 4-20mA for voltage, current, active power, reactive power, frequency, power factor;8) With RS485 communication function (Modbus ...