Hioki insulation testers or megohmmeters characteristic all-in-one designs inclusive of integrated rugged instances and take a look at lead storage compartments. The IR4017-20 is a single-variety, 500V/1000MΩ analog insulation resistance tester with efficient functions and functions to help shorten work time related to discipline insulation trying out. Analog MΩ HiTester IR401720 Single range testing voltage of 500 V • Test insulation resistance as much as a thousand MΩ • Built hard to resist a 1-meter drop onto a concrete floor • Bright LED luminous scale • Check for stay circuits and battery status • Integrated hard case for quick and easy storage without disconnecting the leads