On December 25, 2014 at 16:43, AlCaputcino said...
But, How it works... RF universal remote come with RF to IR hub or something?
Yes. This is the standard method for "non-line-of-sight" remote control. A more modern version is to use WiFi (on expensive remotes), and actually the forthcoming Pronto/Pulse smartphone control actually does use Bluetooth.
However, from a usage standpoint, if you're only interested in controlling standard IR devices without having to aim, then all three technologies will do the exact same job.