DROK Digital Multimeter AC 80-300V 100A Volt Amp Active/Apparent Power Power Factor Meter, Amperage Voltage Tester Voltmeter Ammeter Watt Meter, Red Digital Tube Display The digital Multimeter can display AC Voltage, AC current, active power, apparent power and power Factor Red LED digital tube display, the display is very Clear and bright; press the button on panel to switch between active power, apparent power and power Factor With current transformer which has high accuracy, the transformer can be installed in accordance to actual position Suitable for all power distribution equipment, such as distribution cabinet, audio amplifier, appliance maintenance, etc Please note that this meter is only suitable for Pure AC 50-60HZ power supply, doesn't support square wave, inverter output or sine wave circuit