This HO scale model is the Atlas 10003153 ALCO RS-1 representing Milwaukee Road #874. It comes in eye - catching orange and black with a TMR logo on the cab. The picture might show a different road number. The RS - 1, introduced by ALCO in March 1941, revolutionized locomotive design. It combined the features of a switching locomotive and a road unit. Despite the release of higher - horsepower models, the 1,000 h.p. RS - 1 was produced for 19 years with 623 units. Key features include a retooled die - cast metal chassis, fine - scale handrails, Golden White LEDs, and separately - applied wire grab irons. It's available in a DCC/Sound version with a LokSound decoder. The AccuMate® couplers and realistic die - cast mainframe add to its authenticity. The five - pole skewed armature motor with dual - flywheels ensures smooth performance at all speeds. The Gold Series offers great sound features. It supports all DCC - programming modes, has flexible function key mapping, and follows NMRA DCC standards. The LokSound Select Dual - Mode decoder allows use on both DC and DCC layouts. Over 20 sound effects bring the locomotive to life, including engine start - up, horn, and brake sounds. Note that the undecorated version comes with both friction and roller bearing truck sideframes.

Using this locomotive model is easy. If you're using a DCC layout, connect the locomotive and start programming using the supported DCC - programming modes. The function keys from F0 to F28 can be flexibly mapped according to your preference. For an analog (DC) layout, the LokSound Select Dual - Mode decoder enables the locomotive to run, but remember the Atlas Quantum Engineer won't work with it on DC. Also, on a DC - powered layout, you can't couple it with a locomotive that doesn't have both DCC and sound. When it comes to sound, select from over 20 sound effects and choose your favorite horn, bell, and brake squeal sounds. You can even switch between manual and automatic notching modes while the locomotive is running. For maintenance, keep the locomotive clean. Wipe it gently with a soft, dry cloth to prevent dust buildup. Avoid exposing it to extreme temperatures or humidity, as this can damage the electronics and paint. If you notice any loose parts, handle them carefully and contact the manufacturer if necessary.