What is 3KSPLUS?
| The ultimate in masterkey security

When organisations require maximum intrusion resistance and flexibility in a masterkey system, they choose 3KSplus.

3KSplus provides up to 133 billion possible lock opening combinations

Unlike conventional locking systems, 3KSplus uses a unique pinning system of springless carbide sliders that activate two sidebars to eliminate key bumping and make picking and scanning attacks difficult and time-consuming. And unlike conventional systems, the addition of these broaching sidebars means 3KSplus offers an astonishing 133 billion theoretical key combinations. As a result, organisations can use 3KSplus to install complex locking systems with overlapping hierarchies with a near-zero likelihood of phantom keys. Plus the unique three-curve system of 3KSplus allows individualised key profiles. Blanks from one organisation’s 3KSplus system will never work in another organisations’ system.

Who is EVVA?
| One of Europe’s leaders in masterkey security

Since EVVA’s foundation in 1919, the Vienna based family owned Austrian company has grown rapidly to become Europe’s third largest
manufacturer of keying systems.

EVVA’s name derives from a drive for invention, experimentation and application that has underpinned its reputation as a leader in the development of ground-breaking security technology.

A byword for security, EVVA has filed applications for more than 140 national and international patents over its 90 years of operation. It is the first to attain ISO9001 certification for quality in design and production.

EVVA is exclusively distributed in Australia by the Davcor Group — one of the largest distributors of hardware and security in the southern hemisphere.

Davcor works with a network of more than 85 locksmiths across Australia and New Zealand that are the only people in Oceania authorised to install and service EVVA masterkey systems.

At a glance: The 3KSplus masterkey advantage

Patent protected, until 2025, and restricted masterkey system

As many as 133 billion possible key combinations

Implement a complex security hierarchy

SCEC approved for government facilities


When a user inserts their key, 2 control bars in the cylinder scan 6 curves etched into the 3KSplus key and bring 12 solid, springless locking pins into specific positions. An additional bottom bar checks the edge profiles of the key. The 3KSplus key is scanned 4 times during the unlocking action — 3 times more than other systems. Only when all of these match up does the locking plug release.

Three levels of key control

It is extraordinarily difficult to reverse engineer 3KSplus. Moreover, 3 separate systems guard against key tampering and illicit copying by staff, visitors or contractors:


Controlled protection.
Only authorised locksmiths can manufacture keys for their master key systems, with the correct proof of entitlement.


Legal protection.
Through patents and licensing, EVVA restricts the manufacture of 3KSplus keys to a number of authorised locksmiths.


Technical protection.
Key reproduction cannot occur without specialised and expensive machinery.


A masterkey system to protect any facility in any industry

The 3KSplus system delivers maximum security and billions of key combinations. This is why it’s the masterkey system of choice for industries and organisations that demand maximum protection.

AirportsSecure hangers, gates, server rooms and restricted access areas where maintaining sterile control is critical.
Local/Federal Government and public buildings
Local/Federal Government and public buildingsSeparate divisions may need to control access levels to different offices, halls or depots. EVVA provides this ability. SL3 rated SCEC approved products.
RetailLock down stockrooms and offices in department stores.
Utilities Secure power plants, sub-stations and storage at large utilities like water boards.
Transport & Logistics
Transport & LogisticsControl access to secure yards, warehouses, depots and gates.
Hospitals, pharmaceutical and aged care
Hospitals, pharmaceutical and aged care Exercise strict control over access to utility rooms, service areas and drug cabinets.
Schools and universities
Schools and universitiesSecure entire school or university campuses while providing different tiers of access for individual departments.
Resorts & Hotels
Resorts & HotelsSecure rooms, office areas, laundries, kitchens and machinery areas.

Maximum security design.
3KSplus is a maximum security lock system that uses patented technology to eliminate key bumping and minimise intruders’ ability to tamper with, pick, or bypass the lock.


Ease of use.
Rounded key contours and a symmetrical, fully reversible design means 3KSplus keys can be used in either direction.


Long-life, anti-wear parts.
The combination of a nickel-silver plug and carbide components instead of brass is why 3KSplus locks have been cycle-tested to 300,000 operations.


3KSplus cylinders suit almost any lock or door, including those of other leading brands.


Three level anti-copy protection.
Patents, Correct Authority and the technical complexity of the keys make illicit copying extremely difficult.


Hardened components.
Hardened metal elements provide exceptional resistance to drilling, impact, or plug-pulling attacks.


Low chance of phantom keys.
The use of sidebars and sliders means 3KSplus scales to a huge size without phantom keys compromising security.


Rated products.
SCEC approved. SL3 rated products. Australian Standard approved Sc8 AS4145.2


A comprehensive range of cylinders

This includes oval cylinders to suit Lockwood, Kaba, Gainsborough, Legge and Astra mortice locks; rim and internal cylinders to suit Lockwood and other brands of deadlocks and deadlatches; fixed and floating cam profile cylinders; and locksets for Schlage, Carbine and Lockwood locksets.

EVVA can also produce cylinders to suit cupboard locks; T&L handles; padlocks; pushlocks and camlocks, plus cylinders for keyswitches and rollerdoor locks.
All EVVA cylinders are cycle tested to at least 300,000 operations. Cylinders also meet the highest standards for corrosion and fire resistance, and can operate normally in temperatures from -20 degrees Celsius to 80 degrees Celsius.




Toll Free Phone. 1300 003 882
P. 02 9612 4747  |  F. 1300 650 692

Sydney, NSW (Head Office)
14 John Hines Avenue
Minchinbury NSW 2770

Melbourne, VIC
Unit 3/ 39-43 Duerdin Street
Notting Hill Vic 3168

Brisbane, QLD
37 Sandgate Road
Albion QLD 4010

Adelaide, SA
193 Gilbert Street
Adelaide SA 5000

Perth, WA
16 Gladstone Street
Perth WA 6000