The PQ2071 is a 1-/3-Phase 1000 Amp True RMS AC Power Clamp Meter. Extech's multifunctional PQ2071 Power Clamp meter operates as a True RMS Clamp Meter, Power Meter, Multimeter, and AC Voltage Detector. Featuring a CAT IV-600 Volt safety rating, the PQ2071 measures AC Current, Voltage, Frequency and Power including True Power, Apparent Power, Reactive Power and Active Power. Measures 1-Phase and balanced 3-Phase True Power (kW), Apparent Power (kVA), Reactive Power (kVAR) and Active Power (kWh), plus Power Factor and Phase Angle. Featuring a 2.16 in. (55 mm) clamp jaw opening. Large dual backlit LCD display (9999 count) with bargraph. Frequency measurements to 200Hz. manually store/recall up to 99 data sets. Data Hold, Max/Min, and Auto power off functions. USB interface for connection to a PC for data logging function with included software. Complete with test leads, four color-coded leads and alligator clips, USB cable, PC software, 9V battery and soft case.