Master keys are handy when you want gain access to a number of rooms at the same time. There are a lot of types of these keys and differ depending on the level of the system. As an example, there’s the 2-level key system that’s got 2 levels of keying. It is deemed as the lowest level simply because it produces less powerful keys called change keys. Keys within the 2-level system operate only one lock. They may also handle a number of locks that are the identical. One of the most power unit under this feature is termed the master key. There is also the 3-level key system which is fundamentally a system of 2-level systems that have been linked together. The best unit here is known as grand master key. The last system is the 4-level system that ties two or more 3-level systems tied together to make a great grand master key

• Benefits of Having a Master Key
Master Key systems allow for a variety of practical situations: House owner could have one particular key to enter any unit in desperate situations. A properly designed Master Key system can remove annoyance, increase security, and enable for quick access in an emergency. These master key systems assure access in case of fire, flood, or medical emergency. Once the worst happens, then quick access saves lives and property.
If you are a company owner, finding the system lets you give managerial roles to several people. For example, it is possible to give the main key to the store manager after which give the sub-keys to the people on the hierarchy to be able to have access to the different rooms in the building.
• Downsides of a Master Key
When one key exists in which opens every door on the property or home, there’s a huge responsibility to keep that secure. Any property with a Master System need to have a well-organized key tracking system set up and the master key well-guarded. There would be a security issue when wrong hands got the key. It means that they will easily have accessibility to the entire premise and it will be feasible for them to execute their ill intentions.
And that means you need to change your locks or in a worst case scenario, you might need to call emergency services to break into premises, if an individual inside is in danger and you cannot wait for your own locksmith.