Features 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 Package List 1 x Earth Resistance Tester (Battery Not Included) 4 x Standard Test Line 4 x Auxiliary Ground Rod 2 x Test Line 1 x RS232 Communication Line 1 x CD 1 x Aluminum Case 1 x Manual