My system consists of 5 basic devices. The most-used buttons are large, placed for easy access with the right thumb, and are uniquely shaped so that they can be identified without the need for reading glasses. I didn't try to duplicate all the buttons of each device remote, but selected only those that my family uses. All equipment is turned on/off together by a single pair of buttons located on Page 1 of each device. Includes .BMP files.