| Function | Ground resistance test, Loop resistance test | 
| Power Supply | 6VDC 4 PCS of AA Alkaline batteries(Rechargable) | 
| Resistance Range | 0.01-1500Ω | 
| Resistance Resolution | 0.001Ω | 
| Highest Resistance Accuracy | ±1%±0.01Ω | 
| Current Range | 0.00mA-40.0A | 
| Current Resolution | 0.05mA | 
| Highest Current Accuracy | ±2.5%±1mA | 
| USB Interface | 1.5M USB Cable | 
| Data memory | 999 Sets | 
| Working Current | ≤50mA | 
| Start self inspection time | ≤1s | 
| Clock Function | display hour,minute | 
| Alarm Threshold Setting Range | Resistance: 0-1500Ω,Current: 1-9999A | 
| Alarm 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 blinking | 
| Auto Power Off | The instrument does not operate for 5 minutes, then flashes for 30seconds, and then automatically shuts down. | 
| Working Temperature and Humidity | -20℃-55℃;20%RH-90%RH(Please storge and Operate the instrument at its ranges) | 
| LCD Screen | 4 Digits LCD display, Screen L×W: 47mm×28.5mm | 
| Clamp Size | 65mm×32mm | 
| Clamp Opening Extent | 32mm | 
| Tester Weight | 1160g (With batteries) | 
| Clamp Dimension | L×W×T: 285mm×85mm×56mm | 
| Protection Level | Dual Insulation | 
| Structural Feature | Clamp CT | 
| Shifting | Automatic shifting | 
| External magnetic field | <40A/m | 
| External electrical field | <1V/m | 
| Single measurement time | 0.5 second | 
| Resistance measurement frequency | >1KHz | 
| Measured current frequency | 50/60Hz Automatic measurement | 
| Low Battery Indication | Low battery symbol displays when battery is lower then 5.3V | 
| Memory Full Indication | MEM symbol blinks when all 999 sets memory is full | 
| Over Range Indication | Out of range indication “OLΩ”, “L0.01” or “OL A” | 
| Power Consumption | Max 50mA either in booting up or normally working, Continuously working for 30 hours | 
| USB interface | The data stored in the meter are uploaded to the computer through USB interface and data wire, Then generate report files | 
| Safety Provisions | IEC1010-1, IEC1010-2-032, Pollution level 2, CAT Ⅲ(150V) | 
| Accessories | Meter: 1 piece, Test ring: 1 Piece, Meter Suitcase: 1 Piece |