Hello, I've done a bit of reading on the forum and couldn't find the information I'm looking for. Maybe someone can help me out with a little project I'd like to start on.

I have an Elite VSX-84TXSi receiver with an RS-232 port that can be used as a remote control. What I'd like to do is setup an in wall 5"-7" LCD touch screen to control the hallway speakers that are setup as Zone 3 on the receiver. Just need some basic control (power, volume up, and volume down) to start, and if things go well, build in more advanced control.

Is there a programmable touch LCD & controller available in the market anyone can recommend?

Thank you, for the help, and I apologize if this has already been asked, I couldn't find the answer in my browsing.