Logitech Harmony 550 Universal Remote Control (Discontinued by Manufacturer) Interactive LCD screen and backlit keypad Connect via Windows/Mac PCs to receive updates, configure remote Replace up to 15 remote control devices Compatible with TVs, sound systems, and DVD players/recorders from over 3,000 electronics manufacturers Sound and Picture convenience buttons help you change picture aspect ratios and sound modes. Compatible with TVs, sound systems, and DVD players/recorders from over 3,000 electronics manufacturers Replace up to 15 remote control devices Sound and Picture convenience buttons help you change picture aspect ratios and sound modes. Connect via Windows/Mac PCs to receive updates, configure remote Interactive LCD screen and backlit keypad