This is an HO Scale E-Z Command 1 AMP Locomotive Decoder with NMRA 8 Pin Plug from Bachmann. Suitable for Ages 14 & Up. FEATURES: Dual mode decoder (automatic analog or DCC operation) Quick, easy installation and programming Complatible with NMRA-compliant DCC systems Control speed, direction and lighting functions (including headlight dimming) Service mode decoder lock for changing the address on the layout Ops mode programming Two- or four-digit addresses 14, 27, 28, 128 speed steps Basic and advanced consisting Acceleration, deceleration and start voltage adjustment Instructions included INCLUDES: One E-Z Command 1 AMP Locomotive Decoder with NMRA 8 Pin Plug SPECS: Scale: HO 1/87 Dimensions: .37" x .98" x .19" (9.5mm x 25mm x 5mm) tlh 8/18/10