So I brought 2 roku devices with me overseas... both work great but 1 remote seems to be failing (regular infrared remote)... is there any way to know what remote works with what device before I purchase some other online?
If they are roku sticks, they will only take wifi remotes. If they're Roku express or premiere and take IR remotes, then any universal remote that lists roku will work. You can't use Roku tv remotes on stand alone roku like express, roku tv's use completely different iR code set. If you don't whet roku you have, we certainly don't, and only can guess.