The central keyed system

The central keyed system

Structure
Several different individual keys operate one or
several central cylinders.

Usage
Apartment Buildings

Advantage
Each tenant of an apartment building can also open the
front door, the cellar door etc., with his apartment door key
(but never the door of his neighbour).

The masterkey system

The masterkey system
Structure
Each different cylinder of this system has ist own individual keys. The masterkey operates all different cylinders of the system.

Usage
Hotels, Pensions, Schools etc.

Advantage
The user of the masterkey system can operate all rooms of the system with only one key (MK).

Grand masterkey system

Grand masterkey system
Structure
The grand masterkey system is a system, where two or more masterkey systems are combined. In this case the masterkey is called up groupkey and the key that can operate all cylinders of the system is called Grand masterkey.

Usage
Hospitals, Airports, Power Stations, Banks etc. (objects, where a simple masterkey system is not sufficient enough).

Advantage
With the grand masterkey system is a better subdivision into different areas possible.

Sample of a locking system organisation chart

sample of a locking system organisation chart

Contents of a master key chart

  • type of the locking system (C-, MK- or GMK-system)
  • locking system number, date of issue
  • cylinder system / profile system number of cylinder locks and individual keys
  • lengths of cylinders and special features
  • room-/door designation
  • number of master/ grand master keys
  • presentation of the locking function
sample of a master key chart
sample of a master key chart