Industrial Ethernet Fiber switches are also called industrial Ethernet Ethernet Fiber switches. At the beginning of the design of ordinary Ethernet, the application requirements of industrial networks were not taken into account. Therefore, when the network equipment is deployed on an industrial site, the stability of ordinary commercial fiber switches will face great challenges in the face of harsh working environments and severe electromagnetic interference. In response, industrial Ethernet fiber switches with high reliability, stability and security have emerged as the times require, and have become a transmission tool that can adapt to complex industrial environments and facilitate industrial automation network deployment.