Feature:Made of premium materials, it is sturdy, wear-resistant and can be used for a long time.This type of resistance meter can self-test within 0.5 seconds and start up immediately, which is easy to use.The resistance range is 0.01-200, and the measurement accuracy is high and the rate is fast.With warning light, the beep and NOISE symbols flash, and the anti-interference ability is strong.Low power consumption, long battery life and long life.With fastening screws, it is safe, and it is easy to replace the battery.Specifications:Material: PlasticFunction: ground resistance test, loop resistance testPower: 4 x 6V DC Battery (Battery not included)Resistance range: 0.01-200Resistance resolution: 0.001Maximum resistance accuracy: 1%0.01Data storage: 99 setsAlarm threshold setting range:Resistance: 1-199Alarm sound and light: "Beep-beep" alarm sound, the alarm symbol flashes, press the AL key to turn it on, turn off the alarm or set the alarm threshold.Interference signal recognition: "Beep-beep" sound, NOISE symbol flashesWorking temperature: -20 C -55 CHumidity: 20% RH-90% RHLCD screen: 4-digit LCD displayScreen size: Approx. 47 x 28.5mm / 1.9 x 1.1inFixture diameter: Approx. 32mm / 1.3inClamp opening range: 32mmWeight: Approx. 2271g / 80.1ozSize: Approx. 260 x 95 x 68mm/10.2 x 3.7 x 2.7inProtecting level: double insulationStructural features: clamping CTShift: automatic shiftingExternal magnetic field: <40A / mExternal electric field: <1V / mSingle measurement time: 0.5 secondsResistance measurement frequency: > 1KHzMeasuring current frequency: 50 / 60Hz automatic measurementLow battery indicator: The battery low indicator is displayed when the battery voltage is lower than 5.3VMemory full indication: MEM symbol flashes when all 99 memory is fullOverrange indication: Out of range indication "OL", "L0.01" or "OL A"Auto power off: 5 minutes after startupPower consumption: 50mA at startup or normal operation, 30 hours of continuous operationPackage list: 1 x Clamp Resistance Meter (Battery not included)1 x Aluminum Box1 x Instruction Manual1 x Test Ring.