
OEM Compact 4G 3G Router Is Designed for Small Space Industrial Installation. Dual Watchdog System: Hardware and software watchdogs ensure 24/7 stable operation with automatic recovery from crashes. Wired/Wireless Redundancy: Intelligent switching between 4G and wired networks guarantees continuous uptime during failures. Versatile Interface Options: LAN port supports switchable RS232/RS485 serial transmission for diverse industrial devices. Comprehensive VPN Support: Secure encrypted tunnels via IPsec, OpenVPN, PPTP, and L2TP for remote SCADA and PLC monitoring. Wide Voltage Tolerance: Operates reliably on 9V to 36V DC input with reverse-voltage and surge protection. Industrial Grade Durability: Built-in ESD, surge, and magnetic isolation protection for harsh environment stability. OpenWRT Compatibility: Supports official firmware and allows secondary development via OpenWRT customization. Multi-Scenario Application: Ideal for smart grids, surveillance, vending machines, transportation, and remote device management.