Specification: Item Type: Insulation Resistance Tester Material: ABS Technical SpecificationTechnical IndexDisplayLarge-screen LCD display (maximum 500 counts)Over-limit indicationHI: The sign appears in the insulation resistance range.Automatic rangeUpper range: 500 count lower range 1 (only within the range of insulation resistance)Sampling Rate2 times/secAllowable height≤2000m for indoor useOperating environment Temperature 0℃-40℃/ Humidity: ≤85%Storage environment Temperature: -20C-60°C/humidity: ≤90% Overload protectionInsulation resistance range: AC 1200V/10 seconds Voltage range: AC720V/10 seconds Withstand voltageAC6000V (50/60Hz)/5 seconds (between the circuit and the periphery) Insulation resistance≥1000MΩ/DC1000V (between the circuit and the periphery) Power supply6x1.5V AA dry battery (not included)Rated voltage100V250V500V1000V Measuring range0-1.5GΩ0-5.5GΩ0-5.5GΩ0-5.5GΩ Open circuit voltageDC100V+20% -0%DC250V+20% -0%DC500V+20% -0%DC1000V+20% -0% Standard measuring current1mA-1.2mA at 0.1MΩ load1mA-1.2mA at 0.25MΩ load1mA-1.2mA at 0.5MΩ load1mA-1.2mA at 1MΩ loadShort circuit voltage How to Use: 1: Open the back cover and install 6x1.5VAA dry batteries (not included) 2: Plug in the test lead 3: Measure and rotate to the corresponding gear as required Package List: 1 x Insulation Resistance Tester(Battery Not Included) 2 x Test Leads 2 x Clip 1 x Cloth Bag 1 x Instruction Manual