Feature: 1. Clamp Grounding Resistance Tester: Measure the resistance accurately and quickly with this high accuracy resistance meter with LCD display. 2. Double Insulation for Safety: The clamp tester is designed with double insulation to ensure the safety of users during measurements. 3. 500 Groups Memory: This tester can store up to 500 groups of measurement data, allowing you to easily follow and analyze the grounding resistance values. 4. Wide Measurement Range: With a resistance measurement range of 0.01500 and a current measurement range of 020A, this tester is suitable for various applications. 5. Fast and Efficient: The single measurement time is only 0.5 seconds, allowing you to complete your measurements quickly and efficiently. Specification: Item Type: Digital Ground Resistance Meter Model: ETCR2000X Battery: 4 x AA battery, shipped without battery. Working Temperature: -10-55 Relative Humidity: 10% -90% LCD Display: 4 digit LCD digital display. Storage Groups: 500 groups Protection Level: Double Insulation Structural Features: Jaw Method Ranging: Automatic External Magnetic Field: