EVVA 4KS

Legal protection through patent durations

The commercial production of an EVVA key is carried out exclusively by EVVA. All EVVA products are only sold via authorised EVVA partners. EVVA prevents the unauthorised manufacture of a 4KS key by means of patented features on the key. EVVA can take legal action against the commercial unauthorised manufacture of a key copy. The 4KS patent term runs until the year 2035.

High level of technical protection due to required expertise

The technical features of a 4KS key require special machines and a high level of expertise during production. Illegal production is only possible with very high expenditure. The special feature of the 4KS key is the overlapping curve milling. This practically excludes key manipulation within the locking system. The additional coding also ensures maximum security. The special feature is that one of the three curves runs asymmetrically on the other side. It is the hidden fourth curve that gives the 4KS its name. In total, the 4KS key is scanned four times.

Modular design (SYMO)

The 4KS cylinder is manufactured in modular design (SYMO) and is therefore more than flexible. With the modular system, the cylinder length can be subsequently adjusted by a specialist or a specific function (e.g. lockable on both sides) can be assigned to the cylinder. This allows you to benefit from flexible solutions and reduce your time and cost expenditure. The cylinder lengths can be changed in 5 mm increments.

More security with EVVA security card

Duplicate keys, duplicate cylinders and locking plans are only available from an authorised EVVA partner and only with the corresponding proof of authorisation, the EVVA security card.