Greenlee CM-660 AC True RMS Clamp Meter. It's a handheld device used for measuring AC current, DC and AC voltage, resistance, and frequency.
Some of its key features include:
AmpTipTM: Increases accuracy on small wires with low current.
True RMS: Provides accurate measurements on distorted waveforms.
Digital low pass filter: Ensures precise readings on variable frequency drives.
Non-contact voltage detection: Offers two voltage detection modes.
Additional functionalities: Tests continuity, diodes, and records average, maximum/minimum readings.
Measurement Range: Can measure AC current up to 600 amps, and voltage up to 600 VAC/DC.
Display: Features a 6000-count LCD display.
Jaw Opening: Has a 1.18-inch jaw opening.
Clamp meters use magnetic induction to measure AC current without physical contact with the conductor.