RelayTouch RT121 In-wall Touch Monitor RelayTouch is a 12.1" in-wall LCD touch screen monitor for home theater and home automation applications. Since 2003, RelayTouch has been the choice for professionals and homeowners. Requires Wall Mount Kit (Sold Separately) 12.1" display size (diagonal), 640x480, 800x600, 1024x768 (native) resolution, 150 contrast ratio, 200 cd/m2 brightness. VGA input, USB touch interface.