Features Precision clamp design: precision core and winding, stable, precise and anti-interference. Data Storage Function 99 sets of measurement results can be recorded, saving extra recording time. Widely used in the field of electric power, telecommunications, meteorology, oilfield, construction and industrial electrical equipment, measuring grounding resistance, loop resistance measurement. EASY TO USE, SAFE AND FAST - There is no need to disconnect the ground and auxiliary electrodes when measuring grounded systems with loops. New Function Selection Button The general sorting of buttons is neat and scientific, and the operation is more convenient. Matte black housing: more resistant to dirt and abrasion, the whole table is solid. Features: Precision clamp design: precision core and winding, stable, precise and anti-interference. New Function Selection Button The general sorting of buttons is neat and scientific, and the operation is more convenient. Widely used in the field of electric power, telecommunications, meteorology, oilfield, construction and industrial electrical equipment, measuring grounding resistance, loop resistance measurement. Specifications: Material: plastic. Power supply: 4 x 6 V DC battery (battery not included). Operating Temperature: -10℃-55℃ Relative humidity: 10% to 90% LCD display: 4 digit LCD digital display LCD screen size: approx. 47 x 28.5 mm/1.9 x 1.1 inches Weight: approx. 2331 g/82.2 oz. Size: approx. 275 x 85 x 56 mm/10.8 x 3.3 x 2.2 inches Protection level: double insulation Structural features: jaw mode Range Conversion: Automatic External magnetic field: <40A/m External electric field: <1V/m Single measurement time: 1 second Resistance measurement frequency: >1KHz Highest resistance measurement resolution: 0.001Ω Resistance measurement range: 0.01-1000Ω Frequency of current to be measured: 50/60Hz Can store measurement data: 99groups Resistance alarm threshold adjustment range: 1-199Ω Alarm function: the icon indicates the alarm Package list: 1 x resistance tester (battery not included). 1 x test ring. 1 x instrument box. 1 x instruction manual. Package List