Combines an insulation tester with basic DMM functionality. Test motors, cables, appliances and electrical installations. Testing is inhibited if the circuit is live, and automatically discharges after testing for operator safety. Supplied with a push-button probe, so that you can test without holding the meter. Lock down & Lead null buttons. Rugged construction with large backlit display that shows information at a glance. Cat IV-600V safety rating means that it is suitable for all uses and areas. Measures ac/dc volts, resistance & continuity using a 200mA test current. Model 1507 has advanced features that test over time for moisture ingress & insulation breakdown. Model 1503 Test voltages 500/1000V Insulation measurement range: 0.01 M to 2000 M Model 1507 Test voltages: 50/100/250/500/1000V Insulation measurement range: 0.01 M to 10 G Measure Dielectric Absorption & Polarisation Index Contents: Remote test probe, Test Leads, Test Probes, Alligator clips, Manual