Understanding Your Master Key System
A Master Key System is a key plan whereby selected keys can open a number of pre-defined doors. Basically, it’s a system that allows two or more keys to open one lock. Master key systems have a series of locks that are individually keyed but having the added benefit of an overriding master key that can lock and unlock the entire series. With a traditional Master Key System, you need locks and keys that are the same make and model, then the locks must be rekeyed. The basic pin tumbler master locks use a master wafer/pin in between the key pin and the driver pin.
Most master key systems work in a hierarchical way, providing various levels of access and control for a secure site. For example, an apartment building owner can unlock all doors and locks however the tenant can only unlock one door. Or in a commercial working environment like an RSL club or licensed premises, a manager/employee will have one key that gives them access to the building, their office and perhaps a filing cabinet depending on responsibilities.