Extech GRT300 4-Wire Earth Ground Resistance Tester

Product Description 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. From the Manufacturer 4-Wire Earth Ground Resistance Tester Kit includes all hardware necessary to measure earth ground In 4 ranges from 2 to 2000Ω. 4-wire, 3-wire, and 2-wire testing. 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.

• Measures earth resistance in four ranges: 2 Ω, 20 Ω, 200 Ω, and 2000 Ω
• Supports 4‑wire, 3‑wire, and 2‑wire test configurations
• Features large dual-line LCD, automatic I (current) and P (potential) spike checks, autoranging, automatic zero adjustment, data hold, and auto power-off
• Measures AC earth voltage up to 300 VAC (40-500 Hz) with overrange and low battery indication
• Includes test leads with alligator clips, four auxiliary earth bars, hard carrying case, and eight AA batteries