... 0.01M to 5 TOhm. Test Voltage 5kV dc USB Interface 5kV Digital Mega Meter:♦ Complies with IEC/EN 61010-1 ... Range: -10 ~ 70 ºC ±1.5 ºC ***Special Functions: ♦ USB Interface♦ Measurement of Insulation Resistance for HP Devices (Transformer, Electric Cable ... 10groups, manual save 100 groups) ♦ Data Upload Function via USB interface♦Display Refresh Rate: 1 Time/s (0.25 T/s ...