Thank you, Larry.

I'm adding the transmitter because I was told I can't dim an outlet directly. There is currently a lamp plugged into the switched outlet, but that will move to a nonswitched outlet with a LampLinc module. There is also another lamp in the room on a non-switched outlet getting another LampLinc. The XPT/XP4D allows me 3 buttons (to control 2 lamp modules and 1 scene) plus dimming at the switch. I also ordered an IR543 to throw into the system.

I guess I could just replace the old switch with the transmitter (in the single gang box) and put a new duplex standard outlet at the other end with the connecting tab still in place. I just don't want to "break" anything in case I want to put it back the way it was. :)