The 6549 resistance multimeter tests insulation resistance across three voltage ranges: 250V, 500V, 1000V. This unit also benefits from LCD backlight & low battery indication & comes supplied with test leads & clips, manual & batteries. Completing this multimeter is a solid & hard wearing design, & conformity to CE, EMC, LVD, ROHS alongside meeting IEC10101, CAT111 1000V.