The Greenlee CMP-200 True RMS Clamp Meter with Power Factor (AC)(2000A) is part of Greenlee's premium collection of tools and accessories. This clamp meter is designed for high-capacity 2000A, True Power, Apparent Power, Reactive Power, Power Factor, Voltage, Current, and Frequency. It calculates total power and power factor on 3-phase, 3-wire, 3-phase, 4-wire, 1-phase, and 3-wire circuits. It stores up to 4 sets of measurements for calculation on a multi-phase and multi-wire circuits, and it has a large, easy to read dual 4-digit 4000 count LCD display for high resolution. This model comes with a 9v battery, test leads, and a carrying case. It features True RMS for the most accurate measurement when harmonics are present.