**NOW PATENTED PROTECTED TO 2037!**

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When organisations require a maximum-security master key system with the longest patent life of any similar system in Australia, tested to Australian standards, and meets Australian Federal Government SCEC approval including SL3 rated products, they turn to EVVA 4KS.
The reversible high quality nickel silver 4KS key with overlapping curve technology has additional coding profiles that provide up to 133 billion possible key combinations to allow you to implement even the most complex keying matrix hierarchies that is easily scaled for future expansion as needed.
The active slider placement is facilitated by a springless system design which provides an edge that is unmatched by other systems and delivers optimum performance in the most challenging environments, especially in salty, dusty, or dirty areas where cylinders of other systems which have small springs driving the locking pins into place typically get clogged, affecting the operation of the lock.
EVVA Australia tightly controls the supply of key blanks which cannot be cut on even the most advanced keying machines without a restricted software licence, and unlike many other systems, key machines are not able to decode the 4KS keys, thereby offering an advanced level of technical protection to the system owner.

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