Master key and key equalisation systems

Areas with many doors — such as schools, residential communities, commercial zones — can be very difficult to manage without a proper access control system. That system has a name: master keying. It allows us to reduce the number of keys and control all doors with a single set, greatly simplifying any administrative task.

Setting up a master key system is a complex and labour-intensive process that must be carried out only with knowledge and experience; otherwise you risk ending up with non-functional keys and useless locks.

Experts in master key and key equalisation systems.

Types of master key scheme

Imagine working in a school with more than 50 doors to open and close every day (each with a different lock) and only one person to do all that work. Carrying 50 keys would be extremely complicated — which is exactly why master keying was invented. Every lock has its own combination, and in addition to opening with its own key, it can also be opened with the master key, making the job of the person in charge much easier.

There are several types of master key scheme, divided into groups according to key type.

Key equalisation

A single key design opens all locks in the scheme — a simple plan ideal for homes with several interior locks or small commercial premises where time savings are desired.

Simple master keying

All locks open with a master key as well as their own individual keys. The ideal method for medium-sized offices, companies, etc. and one of the most requested systems.

Common areas mastering

This type is characterised by having several key types — for instance, in a residential community, keys for block A, block B… — that open their own doors plus the common areas, and can also open private areas or flats.

Group mastering

In this scheme locks are divided into groups, each with a group master key plus individual keys. Above all groups sits a "grand master key" that opens every group without distinction. This system is ideal for hotels — floors can be separated — or office buildings divided by company.

Cross mastering

Perhaps the most complex scheme available: several master keys open locks across multiple groups while having restricted access to other groups. It requires extensive planning and control of the key-and-lock diagram to avoid any mismatches.

HOW CAN WE HELP YOU?

Mastering a set of keys or locks successfully requires a qualified professional.

Key equalisation and master key service in Tarragona

As an experienced team of home locksmiths in Tarragona, we are fully equipped to carry out master key schemes without error. At Manel Grau Locksmiths we have been providing this service for more than 15 years, with hundreds of residential communities, office buildings and companies to our name. Contact us for our availability and we will prepare a bespoke quote so you know exactly what the system will cost.

Frequently asked questions about master key systems

What is a master key system?

A master key system allows a single master key to open all the locks in a building or facility, while each individual key only opens its assigned lock. It is the ideal solution for residential buildings, hotels, offices and commercial premises.

How many keys and locks can a master key system include?

There is no strict limit. We design systems from as few as 2–3 locks for a small premises to installations with hundreds of opening points for large buildings. The system can be expanded in the future without needing to replace all the locks.

Is a master key system secure?

Yes, as long as certified security locks are used. Professional master key systems include patent-protected key profiles, which prevent unauthorised copying at hardware shops. Only we, as the installers, can duplicate keys with the owner card.

How long does it take to install a master key system?

It depends on the number of points to install. A residential building with 10–15 locks can typically be set up in a single working day. For larger projects, we carry out the installation in phases to avoid disrupting the building's normal activities.

LOCATIONS IN TARRAGONA WITH A LOCKSMITH

Across the province, we have several locksmith branches that guarantee a minimum response time. These include the most important towns by population and by location — coastal areas with high tourist activity, and central towns that allow us to reach nearby areas efficiently.

In all our service areas we follow the same principles: reliability, speed, efficiency and customer satisfaction. These are the towns in Tarragona where you can find us available.