compatible with A/C Models: 2531835, 2543304, BRC52A61, BRC52A62, BRC52A63, BRC52B61, BRC52B62, BRC52B63, BRC52B64, BRC52B65, FTKB09AXVJU, FTKB12AXVJU, FTKB18AXVJU, FTKB24AXVJU, FTKN09AXVJU, FTKN12AXVJU, FTKN18AXVJU, FTKN24AXVJU, FTXB09AXVJU, FTXB12AXVJU, FTXB18AXVJU, FTXB24AXVJU, FTXN09AXVJU, FTXN12AXVJU, FTXN18AXVJU, FTXN24AXVJU If your A/C model is not on the list above, then it is not compatible. (A) Fahrenheit (℉)/Celsius (℃) Free Switching- Press and hold both the "V" and "Λ" buttons on the remote control simultaneously for 4-7 seconds. (B) This is not a universal remote control. (C)The remote control is equipped with a white backlight.