... :1) To measure: Voltage, Current, Active Power, Reactive Power, Power Factor, Frequency (Hz), Kwh, 4 Quadrant Energy, etc. Total 28 electrical parameters;2) 240 ... 0.1HzPower Active / Reactive / Apparent power, accuracy 0.5%F.S.Energy Accuracy for Active Power and Reactive Power : 1%F.S.DisplayLCD displayPower ...