This device adopts storage and forwarding, high performance, low power consumption design, has the advantages of small size, convenient use, super long life and so on. The product design is in line with the Ethernet standard, adding lightning protection, anti-static, anti-reverse connection and other protection measures, -40℃ ~ + 75℃ wide range working temperature, stable and reliable performance, using storage and forwarding mode, automatic learning and update MAC address, comprehensively improve the transmission and exchange performance of the network. Widely used in intelligent transportation, industrial monitoring, mineral industry, electric power, water conservancy and oil field and other data transmission fields.