Digital Ground Resistance Meter LCD Display 0.01~500Ω Auto Ranging Clamp Earth Resistance Meter Tester Item Type: Digital Ground Resistance Meter Model: ETCR2000X Battery: 4 x AA battery, shipped without battery. Working Temperature: -10℃-55℃ Relative Humidity: 10% -90% LCD Display: 4 digit LCD digital display. Storage Groups: 500 groups Protection Level: Double Insulation Structural Features: Jaw Method Ranging: Automatic External Magnetic Field: <40a/M External Electric Field: <1V/m Single Measurement Time: 0.5 Seconds Resistance Measurement Frequency: >1kHz Maximum Resolution for Resistance Measurement: 0.001 Ω Resistance Measurement Range: 0.01-500 Ω Current Measurement Range: 0-20A, Type C. Tested Current Frequency: 50/60Hz