Feature:Data storage function: 99 sets of measurement results can be recorded, saving additional recording time.Accuracy clamp design: accuracy core and winding, stable, precise and anti-interference.Black matte case: more resistant to dirt and abrasion, the overall table is strong.New function selection button: The overall button sorting is neat and scientific, and the operation is more convenient.Easy to use, safe and fast: There is no need to disconnect the ground and auxiliary electrodes when measuring grounded systems with loops.Widely used in the field of electric power, telecommunications, meteorology, oil fields, construction and industrial electrical equipment, grounding resistance measurement, loop resistance measurement.Specifications:Material: PlasticPower: 4 * 6V DC Battery (Battery not included)Working temperature: -20 C -55 CRelative humidity: 10%-90%LCD display: 4-digit LCD digital displayLCD size: Approx. 47*28.5mm / 1.9*1.1inWeight: Approx. 2331g / 82.2ozSize: Approx. 275*85*56mm / 10.8*3.3*2.2inProtecting level: double insulationStructural features: jaw modeRange conversion: automaticExternal magnetic field: <40A / mExternal electric field: <1V / mSingle measurement time: 0.5 secondResistance measurement frequency: > 1KHzThe highest resolution of resistance measurement: 0.001Resistance measurement range: 0.01-200Current frequency to be measured: 50 / 60HzCan store measurement data: 99 groupsResistance alarm threshold setting range: 1-199Alarm function: icon shows alarmPackage list: 1 * Resistance Tester (Battery not included)1 * Test Ring1 * Instrument Box1 * Instruction Manual.