Can you take a photo of your Reader(s) at your work.
Just so we can confirm for you.
You have a couple of options, and depending on what you plan to do in the future.
A honeywell fob is capable of HID Prox, EM4102 and AWID.
If you are just after a quick solution
I would reccomend the DT Blue Cloner as it is capable of reading / writing all of those modes. There are other options out there, that you may find for cheaper, but they are a luck of the draw as some will visually look the same, but their internals could be something different.
if you use a blue cloner, you will then have a pin put on it, This won’t affect the functionality, but it will prevent you using other writers.
Other than that, it is a simple and cheap solution for you. $40
Your other option is a Proxmark, of which there are a couple of choices there also $50 - $300 one of which you will need at some stage IF you need deal with the blue cloner pin.
But first, take the reader photos so we have a better idea of what we are dealing with