Enhance your viewing experience with this Sony TV Key Controller Button Board, designed for the 56-F855C-1 and 1-878-938-11 models. The board is compatible with Sony brands and is perfect for those who want to replace their old or lost key control board. This non-domestic product is easy to install and use, and will restore your TV's functionality in no time. The key control board is a type of TV board, part, and component that is essential for the proper functioning of your TV. It is compatible with various models and is designed to provide you with a seamless viewing experience.