FT631 5G/4G industrial-grade router is a router that supports multiple access methods to the Internet (Ethernet/WIFI client/5G/4G/NBIoT) and multiple local data access (WIFI2.4G/5.8G/Ethernet/ RS232/RS485) full-stack smart protocol IoT gateway device. The device is loaded with WAN communication, VPN tunnel, WIFI LAN, Modbus, RS232/485 transparent transmission, Onenet and other functions, and provides customers with open source code for various device adaptations to realize wireless LAN, Ethernet, intelligent hardware and wireless WAN. Seamless connection provides users with high-speed, safe, reliable, and re-development access services. The 5G/4G industrial-grade router can also be used as a dedicated vehicle-mounted device. The device adopts a metal casing and provides fixed holes or standard rail installation designs; the device supports dust-proof design; the device has a special anti-interference design and good anti-interference performance. The device uses a high-performance industrial-grade MIPS communication processor and uses an embedded operating system as the software support platform. The system integrates a full range of communication protocols from the logical link layer to the application layer, and supports VPN (including PPTP, L2TP), IPTABLE firewall, Static and dynamic routing, PPPOE, and PPP Client, DHCP Server and DHCP Client, DDNS, firewall, SNAT/DNAT, DMZ host, WEB configuration, support APN/VPDN. It supports automatic dialing upon power-on and automatic maintenance of communication links to ensure that the link is always online; it supports automatic scheduled online and offline functions and other functions. The system is equipped with watchdog WDT protection, and is also loaded with system monitoring protection SWP (System Watch Protect); the product has passed the 3000V electric shock test; ensuring that the device is always online. After rigorous design testing and years of practical application, the product performance is stable and reliable. The equipment is used in various mobile networks, data collection, data caching, remote control, industrial robots and other data transmission fields.