Precision Milli Ohmmeter Calibration Certificate NIST Communication Protocol Not Applicable Insulation Resistance Resolution 100 microohm to 1 ohm Maximum Insulation Resistance 2 kiloohm Minimum Insulation Resistance 200 microohm Number of Digits 4 Power Source 120 V AC 60 Hz Includes Instructions Power Cord Test Lead With (2) Kelvin Clips