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 usually being used by apartment owners where they can open each door of their rented rooms/flats, wherein each tenant also have their own keys for their specific unit. This key can also be used to open the building's main entry door including other common areas in the apartment. But it cannot open other units unlike master keys.

Master key system is also a complex system as it may involve multiple master, grand master, and sub master keys. Need one key for different rooms? Master keys set up is your way to go.

We can make the proper master key systems depending on your key holder. Calling us would be the best thing you should do when in lock trouble. Reach us through our number and we'll provide answers anytime. Our customer support is available 247.