Micro Ohmmeter Communication Protocol USB Insulation Resistance Resolution 1 microohm to 100 milliohm Maximum Insulation Resistance 6 kiloohm Minimum Insulation Resistance 60 microohm Number of Digits 5 Power Source Rechargeable Battery and AC Adaptor Includes 4-Wire Cables with Kelvin Clips AC Adapter/Charger and Carrying Case Rechargeable Li-Polymer Battery Software USB Cable