I find that confusing because as far as I know, every model of Roku Express (just âExpressâ â not âExpress+â or âExpress 4K+â) came with (and works with) an IR remote. IR remotes are not paired and should work with any Roku that they have a clear line of sight with. (Specifically clear line of sight from the IR emitter at the end of the Roku remote to the IR receiver on the front of the Roku.) IR remotes donât pass through walls and typically wonât work if a Roku is behind something or the Roku is turned the wrong way, but they donât need to be paired and as far I know, any one of them should be interchangeable with another.
I just took a remote from an old Roku Express (model 3900 from 2017) and pointed it my Roku Express 4K+ (model 3941 from 2021) and it works with it.
Note that this is one of the exceptions listed above, but even though it shipped with a Wi-fi remote, it can be driven from an IR remote. Now, what Iâm not sure of is what would happen if I pointed the Wi-Fi remote at a Roku that it wasnât paired with. Ie: answer might be: nothing because not paired, or the answer might be: it sends both IR and Wi-Fi so it doesnât matter? I donât know the answer, but if all your âExpressâes have no â+âs at the end of their names, then I think they all have IR remotes anyway.
I assume youâve checked the battery orientation? Some roku remotes have two batteries that are oriented the same way and people arenât used to that and flip one of the batteries. (Grasping at straws.)