the strictest requirements. The locking system in the Royal Library is an EVVA 3KS system. EVVA's tried and tested mechanical 3KS locking system is based on a patented, springless principle featuring unique [...] to protecting the valuable, royal book archives. This object was realised with the locking system 3KSplus, which corresponds to today's 4KS locking system.

einer umfassenden Beratung in einer EVVA Kombination aus dem elektronischen Schließsystem XESAR mit 3KSplus-Zylindern. Nach besonders kurzer Liefer- und Montagezeit ist jetzt für eine flexible Zutrittskontrolle

employees' and clients' security demands. This object was realised with the locking system 3KSplus, which corresponds to today's 4KS locking system. [...] vast. For this reason, operators opted for the combination of the AirKey electronic locking system and 3KS plus , the outstanding maximum security system, to maintain absolute access control in every case [...] uncomplicated locking system quickly and as part of a straight-forward process in addition to a mechanical 3KS plus locking system. On a whole, the locking system for 400 employees and different user groups as