Master key or master keying is the capability to use one "Master" key to open one or more locks that are not actually keyed the same. Master keys are commonly used in commercial setups where the master key holder may have a key to their office's main door that can also open the bathroom, or a maintenance staff may have a master key that opens every door in the same building.

Master keys are often used by apartment proprietors where by they are able to obtain access to each doorway of these rented rooms/flats, wherein each tenant also have their own keys for their specific unit. Tenants's key may also be used to access the main door of the building along with other areas accessible to renters. Unlike Master keys, a tenant's specific key will not work on the lock of a different apartment unit.

Master key systems also involve grand master and sub master keys. If you want to have one key to all different doors, then master key is what you need.

Depending on the needs of the key holder, we can make various master key systems. All you need to do is to dial our number and our accommodating phone staff are more than happy to assist you. Call us anytime you need us, we are available 24 hours a day, 7 days a week.