Woe is me. I spent all 2013 changing all the props to wireless and then the day of, the transmitters interfered with each other so visitors that should have been scared a dozen times were only scared once or twice. So shameful I almost lost my will to scare. This year I'm going back to wired controls, hate it, and sharing my frustration. I'm going with a central control box with various types of relays between incoming/outgoing power sources.