OTC 1000V CAT III Hybrid Multimeter with Insulation Test. A full function Multimeter with an insulation test feature is used to test for voltage leaks through insulation found on Hybrid and Electric Vehicles. HyBrid Insulation Resistance Test True RMS Auto Ranging Diode Test Continuity Buzzer Data Hold Data Logging Display Backlight Min/Max Mode Sleep Mode Low Battery Display Insulation Testing Voltage: 50V, 100V, 250V, 500V, 1000V AC Voltage: 6V, 60V, 600V, 1000V DC Voltage: 6V, 60V, 600V, 1000V DC Millivolts: 60mV, 600mV AC Current: 60mA, 600mA DC Current: 60mA, 600mA Ohms: 600., 6k., 60k., 600k., 6M., 40M. Capacitance: 10nF, 100nF, 1000nF, 10F, 100F Frequency at mV range: 60Hz, 600Hz, 6kHz, 60kHz, 600kHz, 1MHz Frequency at DCV/ACV range: 10Hz 100kHz Temperature: -40C to + 537C (-40F to + 998F) Kit Includes: Heavy Duty Class III test leads with alligator clips, Short Lead, K Type temperature adapter and Manual.