Extech GRT300 4-Wire Earth Ground Resistance Tester

Product description

• 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