... phase multi-function power meter:1) To measure: Voltage, Current, Active Power, Reactive Power, Power Factor, Frequency (Hz), Kwh, 4 ... etc. Total 28 electrical parameters;2) 240*160 dot big LCD for display.3) Two On-Off Input / Output, with remote control ... Power;7) Transformed analog output 4-20mA for voltage, current, active power, reactive power, frequency, power factor;8) With RS485 communication ...