The Atlas 10003832 presents the ALCO S-4 CP Rail #7117 in a gorgeous gold finish, designed for HO scale. Note that the picture might show a different road number. In 1950, Alco launched the S-4, a 1000-horsepower switcher similar to the earlier S-2. Around 636 S-4s were built for North American railroads. A key difference between the S-1/S-2 and S-3/S-4 lies in the trucks: S-1/S-2 has Blunt trucks, while S-3/S-4 has AAR-style trucks. These locomotives served mainline railroads, shortlines, and industrial railways, showing their great versatility. Features include a newly tooled cab design, a 5-pole skewed armature motor for reliable running, dual-flywheels for top performance at all speeds, factory-fitted AccuMate® knuckle couplers, excellent painting and printing, and a sturdy die-cast mainframe and gear cases. The sound functionality features an ESU LokSound decoder supporting all DCC programming modes, flexible mapping of function keys F0 to F31, compliance with all NMRA DCC standards, and over 20 sound effects like engine start-up and shutdown, prime mover sounds through eight notches, bell, air horn, and air compressor.

Using this ALCO S-4 model is easy. First, make sure it's properly connected to your DCC system. Then, you can start programming and controlling it according to your preferences. When it comes to sound, just use the function keys on your DCC controller to access different sound effects. For safety, always keep it away from water and extreme temperatures. To maintain it, clean the wheels and electrical contacts regularly with a soft, dry cloth. Avoid using harsh chemicals as they might damage the paint or internal components. If you notice any loose parts or strange noises during operation, stop using it immediately and check for any issues. With proper care, this model will provide you with a long - lasting and enjoyable experience.