Master Key Systems

A master key system can make a building easier to manage. Individual keys open the doors assigned to their users, while a nominated master key opens a wider group of doors. The starting point is a clear plan of who needs access to each area.

Plan access before choosing locks

List the entrances, offices, stores and shared areas you need to control. Consider staff, cleaners, contractors and anyone who needs access outside normal hours. A simple door-and-user schedule helps us discuss a suitable arrangement and any future expansion.

What restricted key control means

Restricted systems provide a controlled route for ordering additional keys. EVVA states that EPS copy keys, additional cylinders and lock charts are supplied by authorised partners following proof of legitimacy, such as the system security card. The procedure and protection depend on the exact system and key profile.

Keep that authorisation securely and maintain a record of keys issued and returned. A mechanical key cannot usually be cancelled remotely if it is lost: contact us to assess which doors may be affected and what changes are needed.

Is EVVA EPS suitable for your property?

EPS is one option for a planned master key system. We review your doors, existing hardware, access needs and budget before recommending equipment. Ask us about the exact profile, replacement-key process and scope for adding doors.

For manufacturer information, see EVVA’s EPS product guide.

Discuss your doors and keys

Explore our locksmith services or contact Complete Fire & Security with the number of doors and a brief description of your requirements. If you need credentials that can be managed electronically, we can also discuss access control.

Reviewed September 2026.