Entry level 17th edition tester that offers Cat IV, fast and reliable results for 2 and 3-wire non-trip loop testing with resistance and fault current display and frequency measurement. Adjustable continuity and insulation resistance buzzer threshold. The MFT1711 adds a 1kV insulation test range, auto RCD tests, 10mA RCD, programmable (VAR) RCD, ZMAX and true RMS voltage measurement. Large, bright LCD screen displays showing dual parameters. Supplied in a robust moulded case.