Micro Ohm Meter, Resistance Range - Milli and Microhm Meters 0.1 microhm to 2500 ohm, Resolution 0.1u Ohms, Accuracy +/-0.05 Percent, Output Current 0.1A to 10A, Display LCD, Power Source 8.5Ah NiMH Battery, Counts 2,500, Safety Rating IEC/EN 61010-1 CAT III 50V Pol 2, Data Storage 1500 Test Results, Interface RS232, No Calibration Certificate