Earth Ground Tester, CAT Safety Rating CAT III, Calibration Certificate NIST, Display Type Digital, IP Rating IP63; IP65, Maximum Ground Resistance Measurement 2,000 ohm, Minimum Ground Resistance Measurement 0 ohm, Test Current 0.1 mA to 10 mA, Waterproof Not Applicable, Standards EN 61010-1, EN 61326-1, EN 61557, Pollution Degree 2, Battery Chemistry Alkaline, Battery Size C, Display Screen Type LCD, Includes (8) Batteries