As soon as the Black Queen hears of Durand-Durand’s betrayal, she reveals a panel that is hidden by furs. It is vertical with a handful of transparent, organically-shaped knobs. She clicks the top one out of its off position and rotates it back and forth a few times, and the panel begins to glow as a video image appears on the high walls of the chamber, showing the events happening inside the throne room.
Later the Queen turns the top knob counterclockwise to click it back into its stop position to stop the video feed. Then she turns another one the same direction to reveal a different video feed of the labyrinth, indicating that each knob is connected to a particular view. There’s indirect evidence that the degree of rotation controls the volume of audio.
Typically remotes have separate controls for power, channel selection, and volume. Coupling them like this adds extra work to the task of switching channels. The Dark Queen has to turn one off before turning the next one on, and readjust the volume each time. If switching channels is something she does regularly, that’s going to be a pain. But if the large screen can display more than one video feed at a time, automatically diving the screen real estate equally to accomodate the multiple views, these controls make a lot of sense, even allowing her to set the volume per feed to a sensible level.
The only thing that might improve the interface is some label to know which control displays which video feed. Seeing as how they’re translucent, I’d suggest coating them with a rear projection film and piping the video feed directly onto the button from beneath. That provides a direct mapping from the control to the display, and a glanceable preview to let the Dark Queen what might be interesting to watch in the first place.