Filter by Product All MULTIMETER CLAMP METER INSULATION TESTER EARTH TESTER POWER METER LOGGER INSULATION TESTER All ANALOG INSULATION TESTER ANALOG INSULATION / CONTINUITY TESTER DIGITAL INSULATION / CONTINUITY TESTER HIGH VOLTAGE INSULATION TESTER MULTI FUNCTION INSTALLATION TESTER PV INSULATION EARTH TESTER EARTH RESISTANCE & RESISTIVITY TESTER What is an insulation tester used for? It checks the insulation resistance of cables, motors, and electrical equipment. If you cannot find the answer on the FAQ pages, please contact us from here.