Unless you own Bose or Bang & Olufsen then there's a 99.9% chance that all your AV gear uses infra red. However, if you want to be absolutely certain then you can check this using the infra red detector that you own.......
What's that you say? You don't own an infra red detector.
It's a little known fact that most mobile phone cameras will pick up the infra red flashes from consumer gear remotes. Point your remote at the phone's camera and watch as you press the remote's buttons. You'll see purple or blue flashes from the remote. That's infra red light that humans can't see but video cameras can. This is also a neat trick for checking dead batteries in remotes and also for dodgy buttons that died through wear.
Harmony remotes are decent for the money. However, they are not completely customisable; even the top-of-the-range ones.
You can't change screen layouts and add or remove screen buttons exactly as you might want to if trying to keep a group of functions together. The older high-end remotes lacked the four coloured buttons used on Blu-ray players and a lot of TV receivers. It's also really difficult to do multi-room control or operate systems where there's the choice of TV or projector for display. They are still okay for basic TV and home cinema use though and the PC programming does make them relatively pain free to set up as long as you aren't too adventurous in your needs.
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