... . 240x160 LCD, dynamic display, easy to read I. IntroductionDF~300V Handheld Three~phase Meter is high accuracy, high stability, low power consumption ... , easy to use. Can test the three~phase AC voltage, current, phase between voltage, phase between current ... error ±5° if current amplitude under 10mA). Best Voltage Meter, Handheld Three-Phase Meter DF-300V