THE BIT TO REMEMBER
A controller must suit the model railway and its power supply; accessory outputs are not track outputs.
Begin with compatibility
Check the controller is intended for your scale and type of model. Use only its specified power supply. A controller sold for model railway track is different from an unregulated general-purpose adapter.
Count controlled sections, not locomotives
A single DC controller normally controls one powered section at a time. If you want two locomotives to move independently, the layout needs properly isolated sections and suitable controls, or a different control approach.
Keep accessories separate
Points, lighting and other accessories may require a separate output or supply. Never assume an accessory terminal is suitable for the track. Follow every product’s instructions.
A REAL-WORLD EXAMPLE
A small test track needs one controlled track output. A larger two-operator layout may use separate controllers and electrically isolated sections.
Your next step
- List the scale and locomotives you will run.
- Decide whether you need one or more independently controlled sections.
- Check the exact controller manual and specified power supply.
- Plan accessory power separately before buying.
Read the original instructions
Reviewed 7 October 2026. These beginner notes do not replace the instructions for your exact model.
Gaugemaster · Model railway power and control ↗Hornby · HM|DC instruction manual ↗