The PQ2071 is a 1-/3-Phase 1000 Amp True RMS AC Power Clamp Meter. Extech's PQ2071 Power Clamp Meter serves multiple functions, including True RMS Clamp Meter, Power Meter, Multimeter, and AC Voltage Detector. The PQ2071 has a CAT IV-600 Volt safety rating and measures AC current, voltage, frequency, and power, which includes 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), as well as power factor and phase angle. Featuring a 2.16 inch. The clamp jaw opening measures 55 millimeters. Large dual backlit LCD display (9999 counts) with bar graph. Frequency readings up to 200 Hz. You can manually store and recall up to 99 data sets. Functions include Data Hold, Max/Min, and Auto Power Off. USB interface for connecting to.