I ordered these to turn off all the TVs in the house when the kids leave them on. Using the original remote controls, I programmed four buttons into power buttons for TVs of various brands. I had to reprogram a few of them again after they seemed to remember the wrong code. This helps to program the remote control in a darkened room so that flickering ambient light (e.g. fluorescent lamps) does not interfere. The only downside is that when the lights are off it's hard to see how you're holding it.
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