A master key system simply means that more than one key can operate a lock. Each key is different and can also operate locks that the other cannot. For example, key A and key B can both open the front door lock for the building. Key A can also open office A. Key B can also open office B. Key A does not open office B and key B does not open office A.
Front Door > AB
Office A > Key A only
Office B > Key B only
The obvious benefit is that everyone needs to carry fewer keys.
The simplest master key system we install is for a house with a basement apartment. We make one key for the front door of the house, one key for the tenant’s door and a third key that opens both doors. The owner of the house carries the master key. He or she can open any door without fumbling for the right key. The tenant gets a key that only opens the door to the basement apartment. The key that opens the front door of the house is usually for the kids or nanny, they never need access to the basement apartment.
Every building in Toronto over five floors is required to have a master key system in place.
Building Code Act, 1992
220.127.116.11. Emergency Access to Floor Areas
(1) (iii) (c) a master key to fit all door locking devices that are intended to prevent entry into a floor area from an exit stair shall be
provided in a designated location accessible to fire fighters…
We also design master key systems using advanced Mul-T-Lock Interactive keys.
In fact, we have had the pleasure of designing and installing the most advanced mechanical master key systems in Toronto, in Ontario and in Canada!Jason Scheide