eM870M Insulation Tester by ennoLogic 50/100/250/500/1000V – Megohmmeter &
(An insulation tester is used to test the insulation of electrical systems. The better the insulation, the less current will flow, and the higher the insulation resistance will be.3%+5digits) -Diode Test & Continuity -Power: 6x 1.5V AAA (included).