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Model Railroad Control Systems


FREE SHIPPING ON ALL DOMESTIC ELECTRONICS ORDERS OVER $125 and Australia, Canada, New Zealand and UK orders over $250!


We've updated the cpNode System Brochure

cpOD - DCC Occupancy Detector

MP1 Compact Switch Motor - ideal for upper decks and modular layouts!

New Remote Access Controller/Transformer Board


About us:

MRCS is your home for Open Source electronics for Model Railroad Operations. We offer Open Source hardware and software to help you operate your Railroad as prototypically as you like.

Our cpNode system is an updated, completely open, layout control system based on the popular and proven CMRI system (introduced by Dr. Bruce Chubb in 1984).

 We offer signaling and telephone systems for dispatching, Order Board Systems for TT&TO operation, RFID systems for train tracking and car forwarding, Accesories and Switch Motors, Drivers and Mounts.

see our new Products and Services Brochure

We also welcome open source designs from community contributors



The following warning applies to most products on this site



WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.


(California law requires this warning to be given to customers in the State of California)