I/O Expansion Board (51970)

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Multifunction Decoder:

Electronic Solutions Ulm: I/O Expansion Board (51970)

Summary: With this expansion board you easily expand a 21MTC LokPilot or LokSound multifunction decoder. Plug the decoder onto the expansion board and benefit from 4 additional function outputs (AUX5 through AUX8).

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General information
DCC Category
Multifunction Decoder
Manufacturer Electronic Solutions Ulm
Compare Prices Latest Prices
Manufacturer Part Number
Common Name I/O Expansion Board
UPC Number
Release information

Product URL External Product Link
Has computer interface
Firmware Upgrade Possible
Misc Details
Height 5.5 mm0.55 cm <br />0.0055 m <br />0.217 in <br />0.018 ft <br />
Length 30 mm3 cm <br />0.03 m <br />1.181 in <br />0.0984 ft <br />
Width 15.5 mm1.55 cm <br />0.0155 m <br />0.61 in <br />0.0509 ft <br />


With this expansion board one can easily expand a LokPilot or LokSound decoder with 21MTC interface: Plug the decoder onto the expansion board and benefit from AUX5 through AUX8 for lighting effects, coupler etc.

The module can be directly plugged into a 21MTC interface of a loco (if enough height available) or freely wired via its cable connections.

In addition, you are able to connect 2 RC-servos! The 5V voltage needed (for this) will be also provided.

With the help of the LokPilot / LokSound decoder all functions can be controlled in a direct way and are fully integrated into function mapping.

  • Suitable for 21MTC (not MKL) decoders from generation 4.

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See Also

Related Electronic Solutions Ulm Other DCC Equipment Items