Insulation and continuity tester. Ideal for testing transformers, motors, generators, switchgear and panel buildings. Also suitable for domestic appliances, power tools and fixed electrical wiring systems. Features 500V insulation tester, auto ranging, auto discharge and continuity testing at 200mA down to 0.01Ω. With live circuit voltage display, automatic continuity testing that leaves both hands free and an automatic voltage detection avoids accidental contact with live contacts.