The SINA Terminal H Client III is a flexible VPN client without a hard drive for flexible stationary or mobile use for communication with terminal servers via so-called Remote Desktop Protocols. Only graphical data and audio signals are output at the SINA Terminal. In addition, mouse and keyboard entries are accepted. The actual processing of the classified material occurs on remote terminal servers.

The security model of the SINA Terminal is based on the secure SINA OS system platform with several isolated sessions. It provides smartcard technology, IPSec-protected communication as well as scaled hardware and software which are compliant with approval standards. The multi-session concept enables simultaneous processing of data of different classification levels.

The SINA Terminal H Client III is approved in various configurations for German SECRET, NATO SECRET and SECRET UE/EU SECRET.