Useful function, fast response, simple operation, anti-burn design. CM83 series digital clamp meter meets different levels of measurement. CM83A function: manual range, 600A AC current, resistance measurement (0-6KΩ), continuity/diode, capacitance measurement, DC voltage 600V, AC voltage 600V, NCV non-contact AC voltage detection, clamp flashlight/backlight, data hold. CM83B function: auto range, 600A AC current, resistance measurement (0-10MΩ), continuity/diode, capacitance measurement, DC voltage 600V, AC voltage 600V, NCV non-contact AC voltage detection, clamp flashlight/backlight, data hold, True -RMS, AUTO-LoZ, RCD leakage current protection check, variable frequency current measurement. It can be used in a variety of test environments: electromechanical maintenance, air conditioning repair, electrical maintenance, education and training.