1st off - I didn't understand the technology. I just want everything to WORK. And all I had to do was put a battery in this remote control and point it at the TV! I was so glad I didn't have to search for a code number or some other stupid thing that never works for me. Feel free to buy any of them. It works just as well and exactly as the original. Smart hub, source, mute, menu, exit, etc. All buttons work. I am very happy!
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