The Intelligent Serial Port Converter is specially designed to solve the data transmission of the RS485/RS422 bus in a complex electromagnetic field environment. The RS-485/422 interface converts the RS-4851422 serial port into a TCP/IP network interface with photoelectric isolation technology, thus realizing bidirectional transparent data transmission between the RS-485/422 serial port and the TCP/IP network interface. Therefore, the serial port equipment can immediately have the TCP/IP network interface function ensuring the security and reliability of data communication. Obtaining intrinsic safety association certification, the Intelligent Serial Port Converter can satisfy various demanding industrial data acquisition fields. This product is widely used in LNG fueling stations and gas stations.