When councils require maximum intrusion resistance and flexibility in a masterkey system, they choose EVVA 4KS.

With up to 133 billion possible lock opening combinations and patents until 2035, 4KS is recognized as the preferred choice to maximise security, durability, with low maintenance and scalability in mind. Pick, bump, scanning and pulling protection as standard in every lock cylinder.

Featuring a wide array of lock cylinders for many applications including front and internal doors, community halls, sporting facilities, libraries, and more, 4KS allows you to turn your handful of keys in to one key. A true masterkey system where different departments, divisions, and personnel have access to locks applicable to them. This allows the implementation of a simple or complex security hierarchy.

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