The Fluke 1507 Insulation Tester is compact, rugged, reliable, and easy to use. With its multiple test voltages, it is ideal for many troubleshooting, commissioning, and preventative maintenance applications. Additional features, such as the remote probe on this tool, saves both time and money when performing tests. Insulation test range: 0.01 MO to 10 GO, Insulation test voltages: 50 V, 100 V, 250 V, 500 V, 1000 V.