Feature●Dcc equipped for speed, direction, and lighting●Dual-mode digital command control decoder enabling operation with a standard DC Analog power pack or any NMRA-compliant digital command control system●Performs best on 18" Radius curves or greater●E-z Mate couplers●Ho scale 1: 87Description Med SD40-2 DCC equipped diesel locomotive - BNSF #1734 -heritage III - HO scale. With this easy to use and affordable locomotive, you can digitally control speed, lighting, and direction. Compatible with all NMRA-compliant DCC systems.