Available. The Phoenix Contact FL MGUARD RS4000 TX/TX is a robust security appliance designed for industrial networking applications. This device offers a comprehensive suite of features, including a high-performance firewall, VPN support for up to 10 tunnels (expandable to 250 with additional licenses), and an SD card slot for extended storage. It operates over a redundant 24 V DC power supply, ensuring continuous operation in critical environments. The device is housed in a durable metal enclosure, suitable for DIN rail mounting, and is rated for an extended temperature range of -20°C to 60°C, making it ideal for demanding industrial settings. With its advanced security functions and reliable performance, the FL MGUARD RS4000 TX/TX is an excellent choice for enhancing network security in industrial automation systems.