Older Denon AVR with RS232

Anyone have any ir codes for the reciever? Mine didn’t come with a remote (2nd hand). If like the IR functionality as a backup.

Thanks

If you are still looking

Used the same codes for my AVR-2309 and it worked great.

Does anyone have a Picture of the devices they built for ideas. Thinking of using a ATOM S3 lite, and the RS232 adapter with a DB9 Pigtail connector. Just curious to see what everyone has come up with.