Locking Systems with Master Key

Cylinder locks offer the greatest security, for it is virtually impossible to open the with tools. The cylinder lock developed by Linus Yale is very different from other locking systems. The are profile, oval, round and half cylinder locks. Cylinder locks are supplied with extensions as necessary on one or both sides, increasing in  increments of 5 mm, to suit the thickness of the door.cylinder lock

During the planning and ordering phase for a locking system, a locking plan is draw up which includes a unique security certificate. Replacement keys are only supplied after production of this document.

Combination key systems

With a combination key system, the key of the entrance door to each flat also opens all doors to shared facilities as well as shared access doors, e.g. courtyard, basement or main front door. This is suitable for houses with multiple family occupancy or estate houses ⟶①.combination key system


Master key systems

In a master key system, a principal pass key opens all locks throughout the complete system. This is suitable for single family occupancy houses, schools and restaurants ⟶②.master key system

Central key systems

With a central key system, several combination key systems are combined. This is suitable for blocks of flats ⟶③. Separate keys unlock the front door to each flat and to all shared facilities. In addition, there is a master key with unlocks all the shared doors in the blocks.combined combination key and master key system

General master key systems

A general master key system consists of multiple master key systems. The general master key allows one person access to all rooms. It is possible to subdivide areas by using main and group keys. Each cylinder has its own individual lock and, with the exception of the correct master (or pass) key, can only be opened with its owns key. This system is suitable for factories, commercial premises, airports and hotels ⟶④. Vulnerable points which should be taken into account during the planning stage are set out in ⟶⑤.

general master key system

check list doors


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