1.Large LCD display. 2.Can test 20G Ohm 3.INSULATION TESTER 1000V/2500V/5000V Basic function Testing Voltage                100V/250V/500V1000V   Insulation Resistance        1MΩ-20GΩ Accuracy                           3% of rdg+5digits(1MΩ-200MΩ);  5% of rdg+5digits(200MΩ-10GΩ);                      5% of rdg+5digits(200MΩ-10GΩ);               10% of rdg+5digits(10GΩ-200GΩ) AC Voltage 750V Display 1999Range Select                       AUTO Data Hold                             √ Low Battery Indication         √ Back Light                             √ HV red indication lamp ligh √

IT811 digital insulation tester