Single or three phase test at same time ... current, the max. value can reach up to 10A-Wide range, 0~100Ω. Suitable for resistance test ... and high accuracy. -Wrong connecting protection for 380V input power supply -Shockproof, anti-interference, suitable for jobsite. Technical Specifications ... 2%±0.2μΩ,resolution, 0.1μΩ -Test current,0~10A, automatic selection as per test range -Test Voltage:24Vdc ...