Master key or master keying is the capability to use one "Master" key to open one or more locks that are not actually keyed the same. A Master Key System includes a hierarchy of keys along with a variety of cylinders or locks that let different or individual key holder gain access to any given parts of a building or buildings.

Master keys are also used by landlords or landladies in apartment complexes where they have a master key that could open a door in each flat, wherein each tenant also have their own keys for their specific unit. Tenants's key may also be used to access the main door of the building along with other areas accessible to renters. However, it does not have the ability to access all doors in the entire apartment unlike master keys.

Master key system is a complex system that involves grand master and sub master keys. You need master keys systems if you're not into bringing too many keys when opening multiple doors.

We can make the proper master key systems depending on your key holder. Dial our number and get free of charge quotation. We are just a single call away and we are available to answer 24/7.