Insulation Resistance Tester 500V/1000V/2500V/5000V, DCV 600V, ACV 600V, Auto Range, Secondary Display, Auto Power Off, Low Battery Indication, Data Logging 18, Comparison, Polarisation Index (PI), Dielectric Absorption (DAR), USB, Backlight, Analogue Bar Graph, Over Range Warning, High Voltage Indication, Timer +-15 Minutes, Meets IEC 61557, 10000 Count