1、It is suitable for measuring the insulation resistance of various electrical equipment and insulating materials such as transformer, motors, cables, switches, electrical appliances, etc. 2、Icon display/alarm light on/buzzer alarm three types of alarms to prevent the danger of electric shock. Multiple gears can be selected to measure high and low, and the voltage can be measured after shifting. 3、This instrument is a high‑performance digital instrument, with large LCD display, display screen make it easy to read measurements. 4、Insulation resistance meter is beautiful, wide range, high accuracy, high resolution, convenient operation, easy to carry. 5、Resistance short circuit protection makes the measurement safer and more assured. Carry out maintenance, testing and verification of various electrical equipment. Item Type: Insulation Resistance Tester Material: ABS Technical Specification Technical Index Display Large-screen LCD display (maximum 500 counts) Over-limit indication HI: The sign appears in the insulation resistance range. Automatic range Upper range: 500 count lower range 1 (only within the range of insulation resistance) Sampling Rate 2 times/sec Allowable height ≤2000m for indoor use Operating environment Temperature 0℃-40℃/Humidity: ≤85% Storage environment Temperature: -20C-60°C/humidity: ≤90% Overload protection Insulation resistance range: AC 1200V/10 seconds Voltage range: AC720V/10 seconds Withstand voltage AC6000V (50/60Hz)/5 seconds (between the circuit and the periphery) Insulation resistance ≥1000MΩ/DC1000V (between the circuit and the periphery) Power supply 6x1.5V AA dry battery (not included) Rated voltage 100V 250V 500V 1000V Measuring range 0-1.5GΩ 0-5.5GΩ 0-5.5GΩ 0-5.5GΩ Open circuit voltage DC100V+20% -0% DC250V+20% -0% DC500V+20% -0% DC1000V+20% -0% Standard measuring current 1mA-1.2mA at 0.1MΩ load 1mA-1.2mA at 0.25MΩ load 1mA-1.2mA at 0.5MΩ load 1mA-1.2mA at 1MΩ load Short circuit voltage About 2mA Accuracy ±5%rdg±3dgt (above 100KΩ) Small resistance measurement Open circuit voltage About 5V Measuring range 0-999Ω Resolution 0.1Ω Accuracy ±(2%+3) Voltage test DC voltage AC voltage Measuring range ±30-±600V 30-600V（50/60HZ) Resolution 1V Accuracy ±2%rdg±3dgt 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 1 x Insulation Resistance Tester(Battery Not Included) 2 x Test Leads 2 x Clip 1 x Cloth Bag 1 x Instruction Manual