Introduction
FNR400-00 is an ultra-compact industrial IoT router featuring 5G and Wi-Fi 6 connectivity for high-speed, long-range wireless data transmission. Powered by a dual-core Arm Cortex-A53 1.3GHz processor and OpenWrt 21, it delivers stable and secure networking performance for industrial applications. The router supports 1×RS232, 1×RS485, 1×Gigabit Ethernet LAN, and 1×2.5G Ethernet WAN/LAN interface, enabling seamless connectivity for serial, Ethernet, and Wi-Fi devices with transparent data transmission and routing functions. It is widely used in smart grid, industrial automation, transportation, energy, environmental monitoring, smart city, security, water management, and other M2M IoT applications