As a VPN gateway, the SINA L3 Box is a key component of the central IT infrastructure in networks requiring high security. The data exchanged between the SINA components is securely transmitted via encrypted VPN tunnels. SINA L3 Boxes are connecting public authority or corporate networks via the Internet. The design is optimized for usage in harsh environments like industrial networks, machinery control systems and vehicles.

 With an encryption performance level of up to 50 Mbit/s, the SINA L3 Box S R 50M-2 enhances the previous SINA L3 Box S product range with models that can be operated in harsh usage environments. The VPN gateway is based on a design that is both compact and ruggedized.

The SINA L3 Box S R 50M-2 is manufactured in accordance with protection types IP40 and IP67 as standard. This means that devices with the protection type IP40 are protected against 1 mm-sized foreign bodies. Furthermore they are impact- and vibration-resistant. Devices with the protection type IP67, which are available in olive and sand-coloured, are providing full dust, damp and water resistance. Thanks to the extended temperature ranges of -40 °C to +70 °C (operating) the SINA L3 Box S R can be used in harsh environment.