SPECIFICATIONS The instrument complies with: EN61010-1. Insulation: Class2, Double insulation. Overvoltage category: CATIII 1000V, CATIV600V. Display: 4000 s LCD display with function indication. Polarity: Automatic, (-) negative polarity indication. Overrange: “OL” mark indication. Low battery indication: The “BAT” is displayed when the battery voltage drops below the operating level. Measurement rate: 2 times per second, nominal. Auto power off: Meter automatically shuts down after approx. 15 minutes of inactivity. Operating environment: 0 oC to 50 oC (32 oF to 122 oF) at < 70 % relative huity. Storage temperature: -20 oC to 60 oC (-4 oF to 140 oF) at < 80 % relative huity. For inside use, max height: 2000m Pollution degree: 2 Power: One 9V battery , NEDA 1604, IEC 6F22. Dimensions: 182 (H) x 82 (W) x55 (D) mm Weight: Approx.: 375g. Accuracy is given at 18 oC to 28 oC (65 oF to 83 oF), less than 70 % RH DC Voltage (Auto-ranging)