Paragon4 Sound & Control System featuring ROLLING THUNDER -Integral Dual-Mode Decoder with Back EMF for Superb Slow Speed Operation in DC and DCC -Precision Drive Mechanism Engineered for Heavy Towing and Smooth Slow Speed Operation -All Wheel Electrical Pick-up -ABS Body with Die Cast Chassis for Maximum Tractive Effort -Premium Caliber Painting -Prototypically Accurate Paint Schemes and Road Numbers -Many Separately Applied Details such as Handrails, Grab Irons, Horn, Bell, Wipers, and Etched Metal Grills -Prototypical Light Operation - accurate for each paint scheme -Prototypically Accurate Sounds for the EMD SD45 Diesel Locomotive -Metal Kadee-compatible Couplers (2) -Will Operate on Code 70, Code 83, and Code 100 Rail -Minimum Operating Radius: 18 inches -Operates in DC & DCC with improved DC speed control (use DCMaster for DC Sound) -Built-In extra capacitance to navigate imperfect track -Pro Lighting Mode offers individual control of all lights on model -Switcher Mode for precise low speed control -Record & Play Operation - Records and plays back sounds and movements once or repeatedly for automatic operation -High Resolution Audio -Quillable Horn for various whistle lengths and patterns -Choice of 3 selectable Horns -Alternate Whistle / Horn where applicable for locomotive with air horn and steam whistle - both the main whistle and alternate can be easily played -Adjustable bell ringing interval for faster or slower bell -Numerous user-mappable functions with available keys -Multiple realistic passenger and crew sounds play on command -Grade Crossing Automatic Signal -Automatic Forward / Reverse Signal -Prime Mover sound intensity varies with load -Individually adjustable sound volumes for each effect -EZ Reset Button for quick return to factory default settings