• 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)

Measures earth ground resistance in 4 ranges from 2 to 2000 Ohm

The GRT300 measures earth ground in 4 ranges from 2 to 2000 Ohm. 4-wire, 3-wire, and 2-wire testing. Large dual line LCD. Automatic I (current) and P (potential) spike check. Test Hold function for easy operation. Autoranging, Automatic Zero adjustment, Data Hold and Auto Power off. AC Earth Voltage. Overrange and low battery indication.