I was just providing an opinion on the Mx6000. If you like it and the price is way down from the original it may have economic value for you. Just remember with and iPad you get a hell of a lot more than just a remote control that alos has a bad battery and touch screen with terrible feel. There is a reason it was discontinued.

You're gonna have to either post a model for the screen and RF remote/receiver or take a good picture of them and all the connections. It sounds like it has 220V for power and a solid earth ground. As to two wire for the RF remote, that would seem to have to be a powered RF receiver that gets power and signal up and down to screen. Any chance one or both of the wires has two
leads?