Gold Series decoders are built to conform to all NMRA standards and recommended practices. Decoder features: * Super smooth and silent high frequency back-emf motor control. * Supports NMRA DCC Bidirectional data communication. * USP with optional power module for operation on dirty track. * Asymmetrical DCC support including directional stopping. * SUSI Sound Interface * Adjustable precision stopping control. * Low speed gear for switching operations. * Selectable for operation with 14/27, or 28/128 speed steps. * Operation on conventional DC layouts is possible or can be disabled. * Provides 1A continuous motor current, 1.8 amp peak. * Four function outputs rated at 200mA each with advanced function mapping * Directional or independent lighting with dimming and extensive special effects. * Support for Advanced Consist Control and Extended Addressing. * Support for programming on the mainline (operations mode programming). * Support for all forms of programming as described in NMRA RP-9.2.3. * Size: 0.90 x 0.65"x 0.24" L 23mm x W 16.5mm x H 6.3mm