ETCR2000A+ 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:65mm×32mm 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 without any operate 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, pressALkey to turn on/off and setting Interference Signal Recognition:“Beep-beep-beepinch indicator,NOISEsymbol blinking Protection Level:Double insulation Structural Feature:Clamp CT Shift:Automatic shift External Magnetic Field:External Electrical Field:Single Measurement Time:0.5 second Resistance Measurement Frequency:1KHz Measured Current Frequency:50/60Hz Automatic Low Battery Voltage Indicator: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:Exceed range indication “OL O inch, “L0.01inch or “OL Ainch Weight:1160g Dimension:285mm×85mm×56mm Power Supply:4 PCS of LR6 lkaline batteries{Not included}