Is there a way to extend or repeat the rf signal of a mx-900? I don't know if this is relevant but I have wifi and a direct ethernet cable near where the mx-900 is used .

I am trying to control something 70 feet away and there 3 walls in between

I think you can do it with the new ethernet base stations, but was looking for a less expensive way to do it, even if it is with some aftermarket solution