Insulation Tester, Backlit Digital Display Yes, Bluetooth Compatible Yes, CAT Safety Rating CAT IV 600V, Calibration Certificate Available Separately, Capacitance Auto Discharge Yes, Display Type Digital, Dustproof Yes, Greater Than 30V Warning No, Includes 2.5 Kv Red/Black/Blue Silicone Test Leads with Clips, Carrying Case, Red/Black/Blue Silicone Test Leads with Prods and Clips, Insulation Limit Alarm Yes, Maximum Insulation Resistance 1 gigohm, Minimum Insulation Resistance 0.1 megaohm