With the Plug-Expand-Play system by Lionel, operating accessories on your layout has never been easier! Usable on any AC or DC powered layout but designed especially for FasTrack users, the Plug-Expand-Play system simplifies what's needed to connect your operating accessories. It also minimizes the need to mess with bare wires on any FasTrack layout. This accessory system is often as simple as the name—Plug the accessory into your powered track and you're ready to Play!