Features:Test voltage of 250V or 500V or 1000V, can be widely used.Made of ABS, durable long for time service.Large LCD display with backlight, easy to read.Measuring range is 0.1M-1999M, and the range is changed manually.Suitable for measuring the insulation resistance of various electrical equipment and insulating materials such as for transformers, motors, cables, switches, electrical appliances, etc. Specifications:Material: ABSSize: approx 170x130x64mm or 6.7x5.1x2.5inColor: Orange or BlueAC voltage:1V- 750VFrequency: 40-70Hz Output voltage: 90 percent -110 percent (output load of 1000 M) Short-circuit current: 1.0mA Battery voltage low indication: The display displays ""Insulation resistance: 500 M (1,000 V)Pressure resistance: AC 2KV 50Hz 1minute Note:Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:1x Insulation Tester Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.