Keyed to Differ means that every lock is supplied with its own unique key, so a key for one lock will not operate any other lock in the system. These locks can be incorporated into a master key system, but this must be planned and configured from the outset. It is not possible to add them to an existing master key system later without modifying or replacing the master keys.

Keyed Alike means that multiple locks are operated using the same key, allowing you to unlock each one without needing separate keys. A common example is having your front and back doors both opened with a single key. Keyed Alike locks can also be included within a master key system, provided the system is planned and configured to accommodate them from the beginning.

A 2 Level Master Key System is the most straightforward type of master key setup. At the first level, each individual key operates only its assigned lock. At the second level, a single master key is able to open all of the locks within the system, providing convenient access while maintaining individual key security.

A Grand Master Key System combines two or more master key systems into a single, larger hierarchy. Each individual master key continues to operate its own designated group of locks, while a grand master key provides access across all of those groups, allowing for higher-level control and simplified key management.

systems into one comprehensive access structure. Each grand master key continues to control its own section of the system, while a great grand master key provides access across all levels. In most cases, a 4 level hierarchy is more than sufficient to meet the access requirements of commercial and large-scale properties.If you'd like to learn more about master key systems or discuss the best solution for your property, please get in touch. Our team will be happy to answer your questions and provide expert advice.