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. Complete with test leads with alligator clips, 4 auxiliary earth bars, hard carrying case, and eight 1.5V AA batteries.

4-Wire Earth Ground Resistance Tester Features:

• 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
• Complete with test leads with alligator clips, 4 auxiliary earth bars, hard carrying case, and eight 1.5V AA batteries

Specifications                                                                 Range
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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