5. General Specifications 5-1 Max Voltage between input terminal and Earth Ground: CATⅡ2000V or CAT Ⅲ 1000V or CAT Ⅳ 600V. 5-2 Over-range Indication: display “OL” for the significant digit. 5-3 Automatic display of negative polarity “-” . 5-4 Low Battery Indication: “” displayed. 5-5 Max LCD display: 6000 counts digit. 5-6 Auto range control 5-7 Clamp opening size: 45mm. 5-8 Power supply: Power supply: 1.5V×2 “AA” R6P battery. 5-9 Operating Temp.: 0℃ to 40℃ (relative humidity <85%) 5-10 Storage Temp.:-10℃ to 50℃ (relative humidity <85%) 5-11 Guaranteed precision Temp.: 23±5℃ (relative humidity <70%) 5-12 Dimension: 265(H)×100(W)×42(D)mm. 5-13 Weight: Approx. 400g (including battery).