
4G Router Enables Long Distance Data Transmission for Construction and Mining Site Use. Dual Watchdog System: Hardware and software watchdogs ensure 24-hour stable operation with automatic restart on crash. Wide Voltage Input: Supports 9V to 36V DC input with reverse-voltage and surge protection for harsh environments. Flexible Interface Configuration: LAN port switches to RS232/RS485 serial for connecting sensors, PLCs, and industrial controllers. Comprehensive VPN Support: Enables secure encrypted transmission via IPsec, OpenVPN, L2TP, and PPTP protocols. Wired and Wireless Redundancy: Automatically switches to 4G backup when wired connection fails, ensuring 24/7 uptime. OpenWRT Customization: Compatible with OpenWRT firmware for secondary development and specialized function implementation. High-Speed Wireless Access: Supports 2.4GHz 802.11n protocol with up to 150Mbps speed for multi-user applications.