The TRIPLETT Model MG500 Insulation Tester tests Insulation Resistance to 200GΩ using five test voltages (50V, 100V, 250V, 500V and 1000V), and also measures AC/DC Voltage, Resistance, Capacitance, Frequency, and Continuity. Additional features include Polarization Index ((PI), Dielectric Absorption Rate (DAR), Backlit 6000 count display with bargraph, Timed Test function (1 to 10 minutes in 1 minute increments), Comparison Mode (pass/fail), a Lock Power function for hands-free operation, Data Hold to "freeze" the reading on the display, Auto power off, live circuit voltage Indicator, plus store/recall 99 measurement groups. CAT IV 600V safety category. Includes test leads, test probes, remote control probe, alligator clips, (6) AA batteries, and carrying case. 1-year warranty. ETL listed.