THE BIT TO REMEMBER
DCC Ready means ready for a decoder to be fitted. It does not mean one is already inside.
Read the label first
DCC Ready normally describes a DC model with provision for a decoder. DCC Fitted means a decoder is installed. DCC Sound describes a sound installation. Check the exact product number and instructions.
Match the hardware
You need a compatible DCC controller, its specified power supply and a decoder-fitted locomotive. For an unfitted model, check the interface, available space and motor requirements before choosing a decoder.
Keep the first test simple
Follow the controller’s instructions to connect an isolated test track and select the model’s documented address. Try a slow movement in each direction. If the controller reports a short, switch off and check before trying again.
A REAL-WORLD EXAMPLE
An OO model marked DCC Ready with an 8-pin socket still needs a suitable decoder. An otherwise identical DCC Fitted release already has one installed.
Your next step
- Check the model’s exact instructions and decoder status.
- Use the controller’s specified supply and track connection.
- Select the documented address and test one model.
- Record the working address and decoder details in My Collection.
Read the original instructions
Reviewed 7 October 2026. These beginner notes do not replace the instructions for your exact model.
Hornby · Select instructions, including Ready/Fitted labels ↗ESU · decoder installation manuals ↗