Extech PQ2071 True RMS 1/3 Phase 1000A AC Power Clamp Meter Meter operates as a True RMS Clamp Meter, Power Meter, Multimeter, and AC Voltage Detector Measures AC Current, Voltage, Frequency and Power including True Power, Apparent Power, Reactive Power and Active Power Measures 1-Phase/ balanced 3-Phase True Power (kW), Apparent Power (kVA), Reactive Power (kVAR) and Active Power (kWh),plus Power Factor/ Phase Angle Large dual backlit LCD display (9999 count) with bargraph Data Hold, Max/Min, and Auto power off