Cellular gateways and routers provide reliable wireless connectivity for industrial and IoT applications using 4G, 5G, and LTE networks. They enable secure data transmission between remote devices, cloud platforms, and control systems. These devices support VPN, firewall, and redundancy features, ensuring secure and stable network communication in harsh environments. Common applications include remote monitoring, automation, transportation, and smart grid systems. Industrial cellular routers are designed for high uptime, rugged performance, and advanced cybersecurity, making them essential for mission-critical connectivity in modern industrial networks.