Full function protection, anti high-voltage circuit design An accurate, and easy-to-use insulation tester It can be used for grounding resistance values of various power, power equipment, lighting protection equipment and other grounding, as well as AC-voltage Large, easy-to-read lcd-display with backlights Measuring range of earth resistance: 0-2000Ω 0 / 20 / 200 / 2000ohm ± ( 2% + 3) with 0.01ohm, Manufacturer: Kaeltsyn