Megohmmeter, Backlit Digital Display Yes, Bluetooth Compatible Yes, CAT Safety Rating CAT IV 600V, Calibration Certificate Included, Capacitance Auto Discharge Yes, Display Type Digital, Dustproof Yes, Greater Than 30V Warning Yes, Includes Hard Carrying Case, Red/Black Silicone Test Leads with Probes + Clips, SP5 Remote Switch Probe, Insulation Limit Alarm Yes, Maximum Insulation Resistance 1 megaohm, Minimum Insulation Resistance 0.01 ohm, PI/DAR Testing Yes The Megger(R) MIT400/2 CAT IV insulation tester is designed for fast results and operator safety in a wide range of applications, including electrical installation, cable and motor testing, automotive, ESD, panel building, avionics, and maintenance. It offers a high insulation range and digital/analog arc display, plus DC/AC true RMS.