Create your master key system online
One key that opens everything, keys that open only what is needed. Configure your master key system door by door: built on a grand master key (GMK) and master keys (MK).
What is a master key system?
A master key system organises the access rights of a building into a hierarchy. Each cylinder is combined so that a grand master key (GMK) opens every door, a master key (MK) opens a group of doors, and each individual key opens only its own lock. The cylinders are then said to be "master keyed".
How it works
Choose the range
Select the brand and security level of the cylinder using our configurators below.
Configure each door
For each door: the size (30×30, 30×40…) and the thumbturn option. The price is calculated in real time.
Confirm production
Your cylinders are built on GMK/MK and delivered with a key registration card and keys. A specific requirement? Request a quote.
Choose your cylinder range
From entry level to ultra-high security, all can be combined into a master key system.
Electronic master key system, no keys needed
Instead of a mechanical key, fit your doors with electronic cylinders and lever handles that open with a fob or smartphone. Access rights are managed in software: a lost fob is deactivated in one click, without remaking a single key. Ideal for buildings whose use changes often.
Property managers, landlords, local authorities & multi-site organisations
We handle extensions to your existing systems by key number and the design of complex access plans, with factory profile and key registration card.
Master key systems for property managers & residential buildings → Landlords & local authorities → Choose a security level →
A bespoke system?
Extension by key number, large site, factory profile: send us your access plan and a Cléferm expert will get back to you.