A master keyed lock is actually a lock that's built to be opened up by specific keys, but could also be opened using a master key. Locks are safer because the restricted key-way decreases the possibility of accidental opening using the incorrect key.

Master keys are also used by landlords or landladies in apartment complexes where they have a master key that could open a door in each flat, then occupants have their keys for their unit being rented. That very same key may additionally open the main door to their building or any other common areas. However this key is not going to work on the lock of a different unit.

Master key system is a complex system that involves 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. All you need to do is to dial our number and our accommodating phone staff are more than happy to assist you. Our customer support is available 247.