MeterToMeterTo mainly offers instruments and tools. Please confirm the product is offered by our store MeterTo when purchasing, otherwise we can't ensure the quality and after-sale service.Function: Ground resistance test, Loop resistance testPower Supply: 6VDC 4 PCS of LR6 lkaline batteriesResistance Range: 0.01-200ΩResistance Resolution: 0.001ΩHighest Resistance Accuracy: ±1%±0.01ΩData memory: 99 SetsAlarm Threshold Setting RangeResistance: 1-199ΩAlarm Sound and Light: “Beep-beep-beep” alarm tone, Alarm Symbol Flashing, Press AL key to turn on, turn off Alarm or set Alarm Threshold.Interference Signal Recognition“Beep-beep-beep” tone, NOISE symbol blinkingWorking Temperature and Humidity: -20℃-55℃; 20%RH-90%RHLCD Screen: 4 Digits LCD display, Screen L×W: 47mm×28.5mmClamp Size: 65mm×32mmClamp Opening Extent: 32mmTester Weight: 1160g (With batteries)Clamp DimensionL×W×T: 285mm×85mm×56mmProtection Level: Dual InsulationStructural Feature: Clamp CTShifting: Automatic shiftingExternal magnetic field: ＜40A/mExternal electrical field: ＜1V/mSingle measurement time: 0.5 secondResistance measurement frequency: ＞1KHzMeasured current frequency: 50/60Hz Automatic measurementLow Battery Indication: Low battery symbol displays when battery is lower then 5.3VMemory Full Indication: MEM symbol blinks when all 99 sets memory is fullOver Range Indication: Out of range indication “OLΩ”, “L0.01” or “OL A”Auto Power-off: 5 minutes after Boot upPower Consumption: Max 50mA either in booting up or normally working, Continuously working for 30 hoursRS232 Interface (Optional): The data stored in the meter are uploaded to the computer through RS232 interface and data wire, Then generate report files