Keyed to Differ (KD)
All keys are individual and stand alone. Each lock can only be opened by its own individual key.

Keyed Alike (KA)
The system allows a number of locks to be operated by the same key as they are keyed to a specific code. This system is particularly suitable for residential applications with front and back doors.

Master keyed
Master Keying is a method of controlling access through a building. A key schedule is prepared from the provided floor plans. Includes a key tracking system that locates keys and locks and keeps a secure procedure on what keying has been undertaken. Security is based on a system where one lock has its own key. This key will not operate any other locks in the system however where all locks are in the same system the locks can be operated by the one master key.

Grand master key
With this system, locks in several groups are independently keyed with a master key for each group. Each group is independent of each other, and the grand master key will work with all locks in all groups.

Maison keying
A maison key system is a keying system that allows a lock to be opened with a number of unique individual keys. Typically found in applications like apartment buildings, it provides unrestricted access to common doors. Unlike master keyed systems, the lack of security makes this a less attractive option.

Residential Construction Keying
RCK system, involves a single key, replicated to be used by tradesmen for all homes during the construction phase. Residential Construction Building Partners companies will be supplied 25 keys free (additional keys by negotiation), which can be reused on future houses/apartments. Each building company receives a personalised RCK system, so no two building companies have the same keys. When the new homeowner takes over the house, they are presented with their own keys, which when used automatically, resets the lock cylinder, making the RCK inoperable and providing the homeowner with their own unique combination.