Feature:1. Multi‑functional ground resistance clamp meter, supports ground resistance test and loop resistance test.2. It supports automatic gear shifting, when the battery voltage is lower than 5.3V, the battery voltage low sign is displayed.3. The resistance and current alarm thresholds are adjustable and the data stored at the same time is 99 units, for easy measurement.4. When measuring a grounding system with loops, there is no need to disconnect the ground wire without auxiliary electrodes.5. Widely used in electric power, telecommunications, meteorology, oil fields, construction and industrial electrical equipment and other fields.Specification:Condition: 100% Brand NewItem Type: Ground Resistance Clamp MeterMaterial: ABS+Iron Function Ground Resistance Test, Loop Resistance Test Power Supply 4 x 1.5V AA Dry Battery (Battery Not Included) Resistance Range 0.01-1200Ω Current Range 0.00mA-20A Resistance Resolution 0.001Ω Current Resolution 0.05mA Data Storage 99 Groups Alarm Threshold Setting Range Resistance: 1-199Ω, Current: 1-499mA Audible Alarm Beep-beep-beep alarm sound, the alarm symbols flashes, press the AL button to turn on, off, and set Interference Signal Recognition Function Beep-beep-beep prompt tones, NOISE symbols flashes Working Temperature and Humidity -20℃-55℃; 20%RH-90%RH LCD Display 4-digit LCD digital display, Size: Approx. 47x28.5mm / 1.9x1.1in Jaw Size Approx. 65x32mm / 2.6x1.3in Clamp Meter Size Approx. 285x85x56mm / 11.2x3.3x2.2in Protection Level Double Insulation Structural Features Clamp CT Automatic Gear External Magnetic Field 40A/M External Electric Field ＜1V/M Single Measurement Time 0.5 Seconds Resistance Measurement Frequency ＞1KHz Frequency of Measured Current 50/60Hz Au