Feature:1. Equipped with a large LCD display with blue backlight and bar graph, the readings are more clear and accurate.2. Using the latest digital and micro‑processing technology, accurate 4‑pole, 3‑pole and simple 2‑pole methods for grounding resistance measurement, FFT and AFC technology introduced.3. With USB interface, support data upload function and alarm function, data storage up to 300 groups, easy to detect.4. Unique anti‑interference ability and adaptability to environment, the consistency of repeated tests, to sure the high accuracy and high stability of long‑term measurement.5. Widely used in electricity, telecommunications, meteorology, oil fields, construction, industrial electrical equipment and other grounding, soil resistivity, ground voltage, AC voltage measurement.Specification:Condition: 100% Brand NewItem Type: Earth Resistance TesterMaterial: ABS Basic Conditions and Working Conditions Influence Basic Conditions Working Environment Note Ambient Temperature 23℃±1℃ -10℃-40℃ Environment Humidity 40%-60% ＜80% Operating Voltage 9V±0.1V 9V±1.5V rC, rP Auxiliary Ground Resistance ＜100Ω ＜30kΩ Interference Voltage No ＜20V Interference Current No ＜2A Electrode Distance When Measuring R A>5d A>5d Electrode Distance When Measuring Ρ A>20h A> 20 H Features Measure 2/3/4 Pole Grounding Resistance, Soil Resistivity, Grounding Voltage, AC Voltage Power Supply DC 9V (Zi-Mn dry battery R14S 1.5V 6 PCS, 300 hours of continuous standby) (Battery Not Included) Measuring Range Grounding Resistance: 0.00Ω-30.00kΩ