Master Key Happy Valley, OR – Happy Valley OR Locksmith Store

 

All you need to know about master key systems

• Change key: another name for this is sub-master key. It opens single locks or others exactly similar. What the change key opens you can also open with a master key and others over this rank.
• Grandmaster: you can access multiple systems using master keys via this key. You will be able to open all the locks that come below in the hierarchy.
• Master Key: this key is for opening all the locks in a particular system. Individually, you will use the change key for opening these locks.