[Translate to International:] Webbanner 4KS Bürogebäude und Schlüssel

4KS - The Stable Locking System from EVVA

More robust. Stronger. More secure.

You can always rely on 4KS. Thanks to its high level of resilience, the system also locks and unlocks in the toughest conditions. Even after years, it works like it did on the first day. This makes 4KS your first choice for the toughest conditions – at high altitudes or in production facilities subject to high amounts of dirt. What's more, 4KS also offers extensive upgrade opportunities which enables the implementation of highly complex master key systems.

[Translate to International:] Vorne-links-unten (VLU)

The benefits of 4KS at a glance

Resilient and extremely durable
For highly complex master key systems
Springless technology
Patent protection until 2037 at the latest
according to EP3426865. For country-specific patent protection, see worldwide.espacenet.com

[Translate to International:] Universität Wien, AT

The access system for highly complex master key systems

4KS is ideal for master key systems with a complex structure and a large number of different user groups. Such as universities, shopping centres, retail chains and industrial companies. In cooperation with qualified partners, EVVA has been providing security technology for a hundred years.

[Translate to International:] 4KS Schlüssel Zoom auf Kurvenfräsung mit gelbem Kreis markiert

4KS. For the toughest conditions

The 4KS system consists of a few individual parts and is springless, therefore maintenance-free and extremely durable even in continuous use. Whether high up on the mountain or in production facilities with high levels of dirt, 4KS is made for the toughest jobs.

[Translate to International:] Öffnen einer Tür mit 4KS-Schlüssel in der Hand

Smooth-action key

Thanks to the curves, the key is also extremely easy to insert and turns easily and quietly in the cylinder.

[Translate to International:] Hinten-rechts-oben (HRO)

Double cylinder

are suitable for interior and exterior doors and can be equipped with numerous versions and options.

[Translate to International:] Vorne-links-oben (VLO)

Half cylinder

suitable for barriers, key switches, lifts and numerous other situations.

Furniture cylinder

make sure that important documents are securely archived.

Padlock

efficiently integrate external objects into the access system

Switch cylinders

as machine switch or on control panels for electronic systems

Cam lock

for mailbox systems and for secure storage in showcases and display cabinets.

Thumbturn cylinder

allows convenient opening and closing without keys.

Switch cylinder

operate control elements such as those in lift systems.

[Translate to International:] 4KS-Schnittzylinder

4KS. One system, many details

In contrast to other master key systems, the locking elements in 4KS cylinders slide along the curve key cuts on the key. A total of 12 springless, solid locking pins are brought into a specific position via positive control of the 6 key curves and scanned by 2 control bars. The key's overlapping curve key cut makes it virtually tamper-proof.

[Translate to International:] 4KS-Designschlüssel mit Farbpunkten

Practical, handy and appealing

MCS keys are available in many different colours. The colour coding helps to easily distinguish between keys.

[Translate to International:] Sicherungskarte freigestellt

All-round protection

Copy keys, additional cylinders and lock charts are available from authorised EVVA Partners only upon providing proof of legitimacy, i.e. theEVVA security card.

[Translate to International:] Bohrer vor Zylinder

Benefit from the security features

The reliable technology of the 4KS cylinder offers lasting protection against illegal opening methods: