Half-Knob Cylinder

A master key system is a key plan whereby selected keys can open a number of pre-defined doors. It helps maintain better control, saves key replacement costs and is convenient, as there are fewer keys in circulation. It also provides quick access to all rooms within the premises, e.g. for security staff and management personnel. This is not only convenient but can save lives in case of an emergency.

In the above example, the ‘Master Key’ would open all doors and lock types in the property and is held by the caretaker. The Sub-Master A opens the main entrance and all the locks on the ground floor, and is held by the manager of the company that occupies that floor. The same applies to Sub-Master B.

In addition, each employee has one key that opens the main entrance, their own office door and their filing cabinets. These keys work with different types of locks, e.g. door locks, cabinet locks, padlocks, etc., as long as the cylinder inside them is of the same model.

• A system designed specifically for your needs, regardless of the type of building, e.g. residential, commercial, small, large, complex, etc.
• A tailor-made key plan including a logical key and cylinder numbering system that is flexible enough to last.
• A flexible master key system, able to grow and change with your organisation over the long term.
• Reduced number of keys to enhance control and lower the cost of your key replacement.
• Integration into your access control system, if required, so you have an overview in a single tool of both mechanical keys and electronic badges.
• Key clips in many different colours (depending on model), so you can allocate one colour per zone or floor, which is a great organisational help.
• A special ‘Keyplanner’ design tool to help submit your plan online, including your key requirements, long-term overall size of your locking system, and your user hierarchy.

A master key plan is the essence of modern mechanical access control. It is recommended for all types of buildings, from residential houses and apartment blocks through to medium-sized or large organisations with a hundred keys or more. This becomes particularly important in the following cases:

• Keeping control of who holds which key to which room for security reasons
• To eliminate the need to carry too many keys, i.e. convenience.
• For safety reasons, e.g. when emergency services need quick, round-the-clock access to all rooms without having to search for the right key, e.g. in nursing homes, old people’s homes or in student accommodations.