1. M4 series 32-bit ARM processor is adopted, the main frequency is up to 120MHz, the running speed is fast, stable and reliable.2. Support 10/100M Ethernet interface, support Auto-MDI/MDIX (any connection with crossover direct connection cable, automatic switching).3. Support RS232 and RS485 interfaces, the two interfaces can work independently at the same time without affecting each other. 4. Support setting the communication baud rate (600bps~230.4Kbps), support None, Odd, Even, Mark and Space five checksums.5. On-board various function indicators, easy to check the module communication and running status.6. The working mode can choose TCP Server, TCP Client, UDP Server, UDP Client, HTTPD Client (support GET and POST)7. Support Modbus gateway function, more convenient for industrial use. 8. Support Websocket function, which can realize two-way transparent transmission with RS232 and RS485 ports directly through the web page. 9. Support web page, AT command, serial port protocol and network protocol setting parameters, provide setting protocol, customers can integrate into their own software.10. Support custom heartbeat packet mechanism to ensure true and reliable connection, and can also be used to actively capture sensor data 11. Support the custom registration package mechanism, automatically send a predetermined registration package as an identifier after the connection is established, which is convenient for distinguishing different devices.12. Support the function of custom web page, which is convenient for users to customize the content of the module web page. 13. Support RFC2217-like protocol, which can realize communication with devices with variable serial port parameters (baud rate, data bits, etc.). 14. Support KeepAlive mechanism, which can quickly detect abnormal network interruption and disconnect and reconnect. 15. Support timeoutrestart (no data restart) function to ensure long-term stable communication, and the restart time ca