... display, easy to read I. IntroductionDF~300V Handheld Three~phase Meter is high accuracy, high stability, low power consumption, easy to ... , current, phase between voltage, phase between current, phase between voltage¤t, frequency, phase, active power, reactive power, apparent power, power ... (phase error ±5° if current amplitude under 10mA). Best Voltage Meter, Handheld Three-Phase Meter DF-300V