door locks - improved security on a budget

can anyone recommend any sort of physical door lock which would allow the office manager to change the combination/PIN at set intervals.

We currently have a very basic simplex/combination lock protecting an office which has some spare equipment, but putting in a high tech card-key/proximity/biometric lock is perhaps overkill and out of our budget. But I am unsure if other more traditional physical locks could be sought which may allow the office manager to change the locks PIN once every few months. This helps minimise risks whereby someone has guessed the current simplex locks PIN, or an employee changes role and therefore would know the PIN from either previous job etc etc.

I am unsure of the class of lock which may provide this facility to run some searches on cost etc. any pointers most welcome.
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EirmanChief Operations ManagerCommented:
I have one of these

They are very secure and you can't 'slip' the locking mechanism with a cc card etc.

It takes about 3-4 minutes to change the code.
You need a screwdriver and tweezers or a long-nosed pliers.

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btanExec ConsultantCommented:
Here is one no frill one
But thought you may still consider digital lock e.g. for Yale though it tends to be on a slightly high cost
The lock contains all the basic functions of a smart lock; it unlocks the door as it senses your mobile phone, can be programmed to open at certain timings and has a sleek, simple design. It’s also the cheapest of all the locks here, with prices starting at US$159 (S$214).

Aside from the pin code entry, it also allows entry through a key card and, if all else fails, a manual key override. The lock comes with plenty of functions – it warns you when the battery is low, sets off an alarm if anyone forces the door open, can be opened with a remote control, and allows you to key in fake codes to prevent your pin from being exposed. Yale Security Point’s YDD324 is priced at $699
atlas_shudderedSr. Network EngineerCommented:
btanExec ConsultantCommented:
For author advice
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