CEDIA 2015: Digibird Showcases DB-RC4 Rotating Controller for Rotating Displays October 17, 2015 | Home / October 17, 2015 rave-video / CEDIA 2015: Digibird Showcases DB-RC4 Rotating Controller for Rotating Displays CEDIA 2015: Digibird Showcases DB-RC4 Rotating Controller for Rotating Displays at 45-Degree Increments