Hi. Welcome!
This is the key fob that my fire department uses for our ambulance. The fob allows us to enter one of the hospitals we transport to. I believe I successfully cloned it to my flexclass. The output from my pm3 shows the same output for both the fob and flexclass. However, I have yet to be successful in getting it to work on the hospital reader. The reader is not even recognizing it. The flexclass, as i have been told, can be tricky to get a good read. I even have trouble getting my pm3 to read it…placement has to be perfect.
Basically, I believe your question is how do you clone it using a pm3? I’ll try to share my steps later tonight when I have access to my computer. Amal did post a how to guide, but it wasn’t as “dummy” proof as I’d like, so I’ve actually been meaning to post my own version of a how-to. Haven’t done it yet, since I never actually confirmed my flexclass worked on a reader, but I’ll share it with you and if you could confirm that my steps work, then we will be good to go 
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Edit: in meantime, here is the guide that amal created: