General: This instrument is a battery powered insulation resistance tester that can be used to measure DC voltage, AC voltage, resistance, and insulation resistance. When measuring insulation resistance, there are three test voltages to choose from: 500V, 1000V, and 2500V. This instrument has functions such as automatic discharge, automatic shutdown, backlight display, data saving, and low battery warning. It is easy to use and is a measuring instrument. Insulation resistance parameter: Rated voltage:Resistance 500V; Range:0.000 - 4.99G; Drop resistance:1M Rated voltage:Resistance 1000V; Range:0.000 - 10.00G; Drop resistance:2M Rated voltage:Resistance 2500V; Range:0.000 - 49.99G; Drop resistance:5M THE PARAMETERS ARE FOR REFERENCE ONLY,AD THE ACTUAL MEASUREMENT OF THE SPECIFIC EQUIPMENT SHALL PREVAIL. Power Supply:6 x AA battery (Not included batteries) Color:As Shown Material:ABS + Silicone Package Contents: 1set * High-voltage resistance testers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.