Easily control your model trains with the Bachmann E-Z Command Walk Around Companion (with connector wires). This device allows you to control multiple trains from different locations around your layout or coordinate independent railroad operations between a primary and secondary user. plug-and-play connection to E-Z Command® Control Center, duplicates all locomotive addresses set on E-Z Command® Control Center, and simultaneous throttle control of several locomotives. Add to your model trains with Bachmann accessories.