VALUE DIGITAL MULTI CLAMP METER VMC-1 LCD display: max. disp. value 4099 Polarity display: automatic Overload display: "OL" or "-OL" Low battery indication: yes Measurement deviation: if the conductor being measured is not placed in the center of the jaw during current measurement, it will cause extra 1.0% reading error. Drop test: 1m drop test passed Max. jaw opening : 28 mm Max. current conductor size : 28 mm Power supply: 2 x AAA 1.5V