ETCR2100A+ Clamp Earth Resistance Tester is widely used in the grounding resistance measurement of the power, telecommunications, meteorology, oilfield, construction and the industrial and electrical equipment. In the measurement of a grounding system with loop, does not require breaking down the grounding down lead, and no need the auxiliary electrode. It is safe, fast and simple in use. The tester can measure ground faults which cannot be measured by traditional methods. It can be used in applications where traditional methods cannot be measured, because the ETCR series clamp grounding resistance meter measures the combined value of grounding body resistance and grounding lead resistance. Specification: Clamp Size:F32mm LCD Size:4 Digits LCD display, Screen: 47mm×28.5mm Range:0.010O-200O Resolution:0.001O Accuracy:±1 Percent±0.01O Data Storage:99 sets Auto Power-off:Automatically power off after 5 minutes withoutany operation Power Consumption:=50mA, Continuously working for 30 hours Alarm Threshold Setting Range:Resistance:1-199O Audible and Visible Alarm:Beep-beep-beepinch alarm sound, alarm symbol flashing, press AL key to turn on/off and setting Interference Signal Recognition:Beep-beep-beepinch indicator, NOISE symbol blinking Protection Level:Double insulation Structural Feature:Clamp CT Shift:Automatic shift External Magnetic Field: 1KHz Measured Current Frequency:50/60Hz Automatic Low Battery Voltage indication:When the battery voltage is lower than 5.3V, the low battery voltage symbol is displayed Storage Full Indication:Storage data full of 99 sets,flashed display inchMEMinch symbol Over Range Indication:Over range indication OLOinch, L0.01inch or OL Ainch Tester Weight:1160g Clamp Dimension:260mm×90mm×66mm Power Supply:6VDC 4 PCS of LR6 lkaline batteries(Not included)