... Frequency (Hz), Kwh, 4 Quadrant Energy, etc. Total 28 electrical parameters;2) 240*160 dot big LCD for display.3) Two On ... -Off Input / Output, with remote control RS485 Modbus communicatoin and measurement function;4) Isolation ... Factor, Active Power, Reactive Power;7) Transformed analog output 4-20mA for voltage, current, active power, reactive power, frequency, power ...