Function：Ground resistant test, Loop resistance testRange：0.01Ω-500ΩResolution：0.001ΩAccuracy：±1%±0.01ΩPower Supply：DC6V Alkaline Dry Battery (1.5V LR6 X 4) Not includedMeasurement Method：Mutual inductionClamp Diameter：65mmx32mmClock Function：HaveDisplay Mode：4-digit LCD display, black screen designLCD Dimension：46mm×29mmMeter Dimension：W/T/H: 85mm×58mmx285mmSampling Speed：About 2 times/secondData Storage：300 Groups, the symbol "MEM" gives indication, "FULL" mark will flash to indicate the memory has been fullData Review："MR" symbol indication when reviewing dataOverflow Display：Exceed measurement range overflow function: "OL " symbol displayTest Method：Clamp CT, Integral MethodInterference Test：Automatic identify interference signal, "NOISE" symbol indication when the interference current is largeAlarm Function：Alarm when the measured value exceeds the alarm setting valueBattery Voltage：Real-time display of battery power, reminding timely charging when battery voltage is lowAutomatic shut-down："APO" instruction, automatic shutdown after 5 minutes bootPower Consumption：50MA MaxWeight：Instrument: 1180gWorking Temperature and Humidity：-10°C~40C; below 80% rhInsulation Resistance：20Ω or more (500V between circuit and outside)Pressure Resistance：AC 3700V/rms(between circuit and outside)Suitable for Safety Regulations：IEC61010-1(CAT III 300V, CAT IV 150V, Pollution Degree 2); IEC61010-031; IEC61557-1 (grounding resistance)If the quality of the product is not good, please contact us directly. If you have any questions or questions, please feel free to contact us.