Just FYI, the RCU810 is made by the same company that makes One For All and Radio Shack remotes, so it uses the same device code library, excpet that all the codes are 17 higher.
It looks like the code you need is CD/0194 (which would be CD/0211 in the RCA) but that is NOT FOUND, but I have found a similar code that might give you some functionality, which is VCR/0045 (or VCR/0062 in the RCA) although it only looks like the 1-9 numeric keys are in the right place.
If the number buttons work, but nothing else, you might want to consider getting the 15-1994 ($30 from Radio Shack) as it does have the CD/0194 code.
Rob.
http://www.hifi-remote.com