Additional Information: Though engines started getting bigger early in the 20th century

The Trainz SKU for this item is P11543593

The Trainz SKU for this item is P11476512

The Trainz SKU for this item is P11993888

MTH 50-1003 O Scale Digital Command System Track Interface Unit LastUpdated_20260807133147 Additional Information: Though engines startedThis is an MTH 50 1003 Digital Command System Track Interface Unit (Older Version). This unit is from before the Revision L USB equipped model and has a serial interface plug. This unit mates with the MTH DCS remote control. It allows the remote to digitally communicate with your DCS locomotives. Condition: Factory New (C 9) Operational Status: Functional Original Box: Yes (P 9) Manufacturer: MTH Model Number: 50 1003 Road Name: **** No Road Name