Apartment Door Locks With Master Key

In a Master Keyed system, a master key opens all the locks in the system although each door lock also has its own unique key. This permits organizing master key systems along departmental or other functional lines to allow supervisory or emergency access. This kind of apartment door which with master key called apartment door locks with master key.

A master key is a key capable of operating several different locks, each lock being operated by its own separate key (change key).

Many people think that they have a master key because they have one key which operates many locks in their home. In most cases these locks are just keyed alike and are not on a master key system.

If an apartment building has been master keyed, it allows one key to override all the locks in the system. For example, apartment 201′s key will not open 202′s lock but the master-key will open 201′s and 202′s lock and all other locks on the system. None of the individual apartment keys will fit each other but the master key will gain entry to all locks.

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