Description
This I/O expansion board plugs onto the 21MTC interface of ESU V4.0 decoders and breaks out additional control lines as four AUX function outputs and two servo outputs. It's the way to unlock extra lighting, special-function and servo capability from a 21MTC decoder install.
A useful upgrade for detailed models that need more outputs than the basic socket exposes.
- Adds: 4 AUX outputs + 2 servo outputs
- Interface: 21MTC
- For: ESU V4.0 decoders
Brand-new, genuine ESU (Electronic Solutions Ulm). Ships from our shop in Oakville, Ontario.