KM 5400 Multifunction Power Meter is a special instrument for measuring electrical network parameters. The measured parameters are displayed on 5 rows of display, which can measure and manage more than 50 electrical networks parameters at the same time, KM 5400 provides the line voltage, phase voltage, active power, reactive power, apparent power, active kilowatt hour, reactive kilowatt hour and so on electrical network Parameters, at the same time, it provides the demand value of phase current, total current, total active power, reactive power and apparent power, KM 5400 has 485 communication interface, adjustable voltage, current transformer ratio and various voltages input mode to enable it to adapt to the electricity usage situation of many kinds of different voltages specification.