Mechanical Codelocks – All You Need To Know

A mechanical codelock is a lock on a door with a push button keypad that will only allow the latch to be retracted (and the door to be opened) once the designated preset combination has been inputted. No keys are required to operate these mechanical codelocks. There are several models available from various manufacturers like Codelocks, Borglocks and Asec. They are purely mechanical and do not contain any electronics and do not need a power source to be operated.

In this article, Lock Guy (a professional locksmith based in Essex) explores everything you need to know about mechanical codelocks.

In What Situations Should a Codelock be Used

Codelocks are normally used where there are multiple people that will need to access that door, but you want to prevent certain people from gaining access.

Typically you might see codelocks in offices or in retail, leisure or hospitality venues where members of the public can wander around, but you do not want them to access staff only areas.

In such situations, you can give the access code to trusted responsible authorised personnel and only they can access the door keeping members of the public out of sensitive areas like operational areas or staff areas.

Most mechanical codelocks are used on internal doors, although there are models that are suitable for external use.

Another common application for codelocks are gates.

Which Mechanical Codelock Should You Get

As mentioned, there are many versions available. The starting point should always be in assessing the amount of use it will get (referred to as ‘traffic’). If you have a high volume of people that are accessing the door all the time, then you need a robust, heavy-duty high usage product. But this is overkill if the door is accessed only infrequently in which case a light duty low traffic version will be fine.

Next, consider what it is behind the door that you do not want to be accessed. If it protects very valuable and highly sensitive things, then you need a high security version. But if it is just, for example, a staff canteen, then a standard codelock should be sufficient.

Consider how you want it to look and the features it may have. Options include:

knob or lever?
keypad both sides, or just a handle on the inside?
hold back function? (This gives the option to keep the latch retracted when engaged so no code is needed to open the door)
What finish you would like (e.g. silver, black, brass, etc.)
How a code is changed (will you need to change it regularly)

Generally, the more code combinations available, the better it is from a security point of view.

Get one with numbers and letters to stop people using obvious numerical codes.

Codelock Advantages and Disadvantages

Advantages

There are no keys to manage or for people to lose.
Provides secure access for multiple people.
Prevents access from unauthorised people.
Easy to use.
Does not rely on a power source.
They are low maintenance and reliable.

Disadvantages

Codelocks are generally not as secure as a standard lock:

Doors are only held shut by the latch and no other locking points
Once the code is known, then it can just be given to other people and anyone with the code can access that door
It is easier to destructively remove a codelock than a standard lock
It may be more expensive than a standard lock

Changing Codes

It is often necessary (or at least a good idea) to change the access code periodically to ensure that the code is only known by those that should know it (e.g. not former employees).

To change a code most models require them to be unscrewed from the door and then the backplate needs to be removed and you change the code by interchanging the coloured tumblers whilst the ‘C’ button is depressed. Further detailed instructions for your model are available online and on YouTube.

There are some models that have a ‘quick change’ capability, so if you will need to change the code from time-to-time, then getting one of these models would be advisable.

Please note that codes are generally not in any sequential order and repeat numbers are not normally possible.

Other Considerations

These mechanical codelocks are very reliable and require little or no maintenance, especially if they are fitted internally. Keeping the latch lubricated is advisable.

Cleaning the code lock is also a good idea from a maintenance viewpoint, but also from a security viewpoint: Over time sometimes it is possible to visibly see the buttons that get used a lot as they look more worn or cleaner than the unused buttons.

Codelocks are a very useful product used in the right situations – but the choice of which product to select can sometimes be overwhelming. They also need to be fitted correctly which does require expertise. A good reputable locksmith can advise you on the right mechanical codelock and can fit it for you. If you require any further information or need a codelock fitting or repairing in Witham, Maldon or across Essex, then contact Lock Guy

Got a question about a lock issue you may have? Why not have a look at the FAQ page or one of the helpful advice videos on the Media page.