Test insulation of wires, cables, transformers, motors, surge arrestors and generators Selectable testing voltages - one testing instrument for low and high voltage systems from 500/1000/2500 and 5000V Insulation resistance measurement up to 1T ? User selectable programmable timer (10s to 30 min) Automatic discharge of test object after completion of measurement Diagnostic tools Polarization index (PI) Dielectric absorption ratio (DAR) Comparison feature to set pass/fail thresholds for quick measurement and verification Dual power source – receptacle or batteries Built in internal memory storing 18 measurements Comes as a complete kit: power adapter, software, USB interface cable, hard carrying case, batteries, complete set of test leads, and instruction manual CAT III 600V