I dislike posts that seem to say "research this for me quickly, because I'm in too much of a hurry to do it myself".

Maybe someone with specific knowledge and recollection of the 2807 will see and answer your post soon enough to help you. But I'd bet against it.

Lots of Denon models use the same codes as other Denon models, so you'll probably be OK.

Many posts here (including many written by me) tell you how to read the Denon documentation of IR signals and how to traslate that into Pronto Hex for the documented Denon and Kaseikyo signals. So if you want to be sure before you go to the job site, start reading quickly.