I have an outlet on one side of the room that’s connected to the wall switch. On the other side of the room is a non-switched outlet with a lamp plugged into it. I want the lamp to be switchable by the wall switch, but I don’t want to run an extension cord across the room on a permanent basis.
So I envision a two part device. Part A plugs into the switched outlet, and consists of a transmitter, and maybe an extra outlet so you don’t lose use of that outlet. Part B plugs into the un-switched outlet and provides an outlet to plug the lamp into, as well as a receiver. When the wall switch is on, A sends a signal to B. As long as B gets the signal, it provides power to the lamp. When the wall switch is off, the transmitter gets no power and shuts off. B sees no signal, so it cuts power to the lamp.
Viola, the unswitched outlet becomes virtually connected to the wall switch.
So does this exist? Or anything like it?