1.Features:  Measuring range: 0~360°; 0~200mA/2A/10A; 0~20V/200V/500V  Clamp mouth: φ7.5mm (φ40mm )  LCD: 3-1/2 LCD display  Resolution:1°; 0.1mA; 0.01V  Double channel, multifunction digital, hand-hold  11 years of specialized meters  OEM services available  ISO,Patent and CE certificate 2.Specifications:       Technical Specifications        Function    Ground resistance test, Loop resistance test        Power Supply    6VDC 4 PCS of AA Alkaline batteries(not included package)        Resistance Range    0.01-1200Ω        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        Data memory    99 Sets        Alarm Threshold Setting Range    Resistance: 1-199Ω        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        Working Temperature and Humidity    -20c-55c;20%RH-90%RH        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    1KHz        Measured current frequency    50/60Hz Automatic measurement        Low Battery Indication    Low battery symbol displays when battery is lower then 5.