Made of fine quality material, practical, easy to operate and use, wide application , has a long service . Features: Useful function, fast response, simple operation, anti-burn design. CM83 series digital clamp meter meets different levels of measurement. CM83A function: manual , 600A AC current, resistance measurement (0-6KΩ), continuity/diode, capacitance measurement, voltage 600V, AC voltage 600V, NCV non- AC voltage detection, clamp flashlight/backlight, data hold. CM83B function: auto , 600A AC current, resistance measurement (0-10MΩ), continuity/diode, capacitance measurement, voltage 600V, AC voltage 600V, NCV non- AC voltage detection, clamp flashlight/backlight, data hold, True-RMS, AUTO-VLoZ, RCD leakage current conservation check, variable frequency current measurement. Can be used in a variety of test environments: electromechanical maintenance, air conditioning repairing, electrical maintenance, education and training. 30mm jaw opening, more practical. LCD large screen, digital display, fine quality backlight board with high contrast and full screen backlight design. Specifications: Material: ABS Color: black Model: CM83A, CM83B (optional) AC current (A): CM83A: 0~6A/60A/600A CM83B: 0~1A/10A/100A/600A Accuracy : ±3.0%+6digits AC voltage (V): CM83A: 0~100V/600V CM83B: 0~100V/600V Accuracy : ±1.0%+3digits voltage (V): CM83A: 0~100V/600V CM83B: 0~100V/600V Accuracy : ±0.8%+3digits Resistance (Ω): CM83A: 0~6000Ω CM83B: 0~1KΩ/10KΩ/100KΩ/10MΩ Accuracy : ±1.2%+3digits Capacitance: CM83A: 0~600μF/6000μF CM83B: 0~600μF/6000μF Accuracy : ±4.0%+5digits Display counts: CM83A: 6000 counts CM83B: 10000 counts Manual/auto : CM83A: manual CM83B: auto Continuity/diode: CM83A: auto distinguish CM83B: auto distinguish NCV (non-): CM83A: yes CM83B: yes Clamp flashlight: CM83A: yes CM83B: yes Backlight: CM83A: yes CM83B: yes Auto off: CM83A: yes CM83B: yes Data hold: CM83A: yes CM83B: yes True-RMS: CM83A: no CM83B: yes RCD test: CM83A: no CM83B: leakage current switch conservation test AUTO-VLoz: CM83A: no CM83B: low impedance voltage measurement VFD: CM83A: no CM83B: variable frequency current test Frequency: CM83A: no CM83B: test frequency with AC current Working environment: 0~40℃ (32~104℉); ＜80%RH Storage temperature: -10~50℃ (14~122℉); ＜70%RH Battery: 2 * AAA battery (not included) Item weight: 380g / 13.4ounce Package size: 200 * 75 * 35mm / 7.9 * 3.0 * 1.4in Package weight: 440g / 1.0lb Package list: 1 * Clamp Meter 1 * Pair of 10A Probe 1 * Bag 1 * Use Manual