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Features: Widely applied in ground resistance measurement, loop resistance measurement in fields such as electric power, telecommunications, meteorology, oil field, architecture and industrial electrical equipment, etc. When measuring ground system with loop, there is no need to disconnect the ground wire without auxiliary electrode, which means safer and faster. ETCR Clamp Earth Resistance Tester can measure the ground fault which can not be measured by traditional method, can apply in the occasion where traditional methods are unworkableSpecifications:Power Supply: 6V DC=4PCS AA Alkaline batteriesResistance Range: 0.01-200ΩWorking Temperature and Humidity: -10℃-55℃;10%RH-90%RH 4 Digits LCD displayClamp Opening Extent: 32mmClamp Dimension: L×W×T: 260mm×90mm×66mmProtection Level: Dual Insulation