The Extech GRT300 includes all hardware necessary to measure earth ground in 4 ranges from 2 to 2000Ω.
Specifications
Earth Ground Resistance ranges 2Ω/20Ω/ 200Ω/2000Ω Basic Accuracy ±(2%rdg+3d) Resolution 0.01Ω/ 0.1Ω/1Ω/0.01kΩ Test Current / Frequency <2mA / 820Hz AC Earth Voltage / Frequency 0 to 300VAC / 40 to 500Hz Accuracy ±(2%rdg+3d) Power supply Eight 1.5V ‘AA’ Batteries Dimensions 9.8 x 7.8 x 4.3" (250 x 190 x 110mm) Weight 3.15lbs (1430g) (batteries included)
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