Megohmmeter Backlit Digital Display Yes Bluetooth Compatible No CAT Safety Rating CAT III 1000V Display Type Digital Includes Carrying Case Test Leads with Alligator Clip Insulation Limit Alarm Yes Maximum Insulation Resistance 2 gigohm Minimum Insulation Resistance 200 ohm Parameters Measured Insulation Resistance Power Source Battery Resistance Accuracy +/-3.00 Percent Test Current 1 mA Test Voltage 1 000V DC 250V DC 500V DC Auto Power Off Yes Auto Ranging No Battery Size AA