Feature: 1. Smart Testing: Using GPRS wireless communication, the non contact online testing through the ground wire will not affect the working. 2. Reliable Work: Closed structure enables high accuracy, stability and reliability for both indoor and outdoor measurement in real time. 3. Simple to Use: Enables LCD digital display and alarm threshold setting as well as sound and light alarm, the operation is very simple. 4. Broad Utility: For transmission line tower grounding, meteorological thunder protection grounding, petrochemical grounding and so on. 5. Easy Carrying: Comes with a compact size and a light weight, the storage and carrying of this ground resistance tester is very easy. Specification: Item Type: Ground Resistance Tester Model: ETCR2800C Material: PVC Application: Suitable for transmission line tower grounding, meteorological thunder protection grounding, petrochemical grounding, communication grounding, substation grounding, railway facilities grounding, building warehouse grounding, metal loop resistance, electrical equipment grounding, etc. Function: Loop grounding resistance online monitoring, metal loop connection resistance online monitoring, grounding condition monitoring. CT Structure: Closed Loop Resistance Range: 0.01??-200?? Resolution: 0.001?? Accuracy: ??2%rdg??3dgt (20????5??, below 70%RH) Overflow Indication: When the test value is greater than 200??, the LCD displays OL??. Alarm Indication: Detector with sound and light alarm and LCD display. Alarm Settings: Background Settings Working Temperature and Humidity: -20??-55??, 20%RH-90%RH. Temperature and Humidity Error: No more than 5%. Shifting: Automatic Shifting External Magnetic Field: