Earth Resistance Online Detector developed by Sunlight company does not change any design structure of the original grounding system, and adopts on-line monitoring technology such as non-contact measurement, which will not affect the grounding effect and the normal operation of facilities. There is no need for self-test and real-time detection,and The product can be installed and used as a single product, or it can be formed into a wired network system or a wireless network component system. With the support of the system, the data can be stored. Through the curve display of the accumulated data, you can intuitively see the changing trend of the ground grid and detect whether the ground grid is in health conditions or not.