"The FLIR IM75 is both an advanced multifunction digital multimeter and premier handheld insulation tester for installation, troubleshooting and maintenance professionals.Advanced Insulation Modes: Insulation Resistance up to 20 GΩ, PI, DAR, Earth Bond Resistance. Multiple ranges of resistance insulation test levels available via rotary switch: 50V, 100V, 250V, 500V, 1000V. Multi-color LED indicator with Compare Mode makes pass\/fail determinations easy and visible. True RMS DMM measurements features reliable performance and 1000V range. VFD Mode for superior accuracy on variable controlled drive equipment. Remote viewing of real time readings on AndroidTM and iOSTM smartphones and tablets with METERLiNK® connectivity and free FLIR Tools Mobile app. Transmit readings to METERLiNK-enabled FLIR thermal imaging cameras to document and analyze thermal changes during insulation measurements. Extremely bright LED worklights in a flood pattern to illuminate test areas and targets. Durable double-molded construction (IP54, 2m Drop Test). Ready for work with plenty of accessories: silicone CAT IV test leads with screw on silicone insulated alligator clips and magnetic hanging strapTester Type = Insulation TesterMinimum Test Voltage = 50VMaximum Test Voltage = 1000VMaximum Insulation Resistance Measurement = 20GOhmsDisplay Type = LCDMinimum Operating Temperature = 0°CMaximum Operating Temperature = +50°CPower Source = BatterySafety Category Level = CAT III, CAT IVSafety Category Voltage = 600 V, 1000 V"