3KS was EVVA’s first reversible key system. The unlocking authorisation is verified using three curves. Another innovative highlight: 3KS features a springless pin function. This makes the system resistant [...] resistant to impact picking attempts. 3KS is also very resistant to wear, easy to use and thus ideal for large-scale locking systems. The first EVVA order involving 3KS came from Berlin Cathedral: German [...] over the symbolic golden key in a ceremony. From 2007, the curve locking system, also available as 3KS plus , was further refined.

managed from the Belgian branch since 2016. The French and Belgians' favourite EVVA products are 3KS plus and 4KS.

of software that makes digital planning of locking systems and ordering more simple for customers. 4KS, 4 Curve System – a mechanical access control system that meets today’s most challenging security demands