Checks continuity, tests for opens, shorts miswires and intermittence, checks wire resistance down to 0.1 Ω and isolation up to 1 GΩ. Checks for insulation resistance and dielectric breakdown up to 1500Vdc or 1000Vac. External terminals available for high voltage testing on transformers and other electrical components. 152 test points for LV tests, 128 test points for HV tests. Expandable to 1024 test points. Includes probe.