To use as a replacement remote control for Pioneer VSX-522 and as far as I remember one button from the original different but generally very practical remote control replacement for Pioneer AVR model . Mine had a sticker on the bottom that said "Pioneer" but I took it off and it says "Pioneer". Bottom line, it works great and the price is right. Happy with the purchase. Probably works with other models as well, I only have experience with the above model.
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