The MG320 combines a portable 20GΩ/1000V Insulation Tester with a True RMS Multimeter. Insulation tester includes PI/DAR modes, programmable timer, and a comparator for custom test configurations and quick results. Cat IV 600V Safety rating. Manually store/recall up to 99 readings. 5 Test Voltage ranges. High voltage and overload indication. Complete with test leads, alligator clip, 6 x AA batteries, and soft case.