The wired and wireless X-10 light switches and outlets will work if the barn and the house outlet the wired X-10 wireless receiverr is plugged into are on the same side of the split 220. The x-10 signals over the house wiring and doesn't always make it to the "other side". Yes, it's ancient technology - but it works. I have a houseful, including a programmable timer (programmed from a PC) that can have different lighting patterns every day for a year..