Welcome to RR Concepts

2024 Price List and Order Form

Model train electronics from RailroadConcepts

All products can be ordered direct using a credit card, VENMO, or Personal Check. When sending a check in the mail please fill out the shopping cart as normal and then PRINT.

We offer a 5% discount for cash or check.

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The YardMaster can be used with a StationMaster for multiple train alternating hookups, station stops for AC trains, signal light controls, or for reversing loops control..



The StationMaster is available in a 5 AMP or 10 AMP configuration. (This is the maximum AMP load, not the rating of the transformer.) For reference, An LGB 0-4-0 requires about 1 AMP, so you could run 4 engines simultaneously with the 5 AMP unit. A Bachmann 4-6-0 requires about 1/2 AMP so you could run 8 at the same time with 5 AMPs.


Includes 1 StationMaster, 4 sensors, and 2 magnets. A bypass cable is also included which will allow full manual override by adding a switch to the cable.
179 - 5 AMP

199 - 10 AMP

Station Stop Kit

Includes: 2 Sensors, one Magnet, and the Screwdriver/Magnet tool.

12 Large Scale:
Small Trains (N/HO/On30, etc):

Alternating Trains Kit

Includes: 4 Sensors, 2 Magnets, 2 diodes, and the Screwdriver/Magnet tool.

25 Large Scale:
Small Trains (N/HO/On30, etc):

5 AMP versions shown. Click to see larger image.


The Back-n-Forth Self-Adjusting Shuttle is a reversing unit with realistic accelerations and decelerations. The Shuttle will sense the ends of the track and self-adjust to provide a very realisitic slow down and creep to a stop. In-between stops are possible by adding a sensor at each stop. The basic back-and-forth operation does not require sensors or magnets. Insulating clamps and diodes are used for the end of track sensing.

SHUTTLE Version 3

Easy version for simple reversing operations.

Includes 2 Split-Jaw insuiating clamps and 2 diodes.


SHUTTLE Version 2

Advanced version with programmable adjustments and multi-train control.

Includes 2 Split-Jaw insuiating clamps and 2 diodes.

Reversing Diode Kit (Included with Shuttle)

Contains: Two code 332 (Split-Jaw large scale) track Isolators, and two 1 AMP diodes ready to be attached to the isolators..


5 AMP version show. Sensors and magnets sold separately


Train Sensors, G Scale, 2 pack 9
1 Dozen G scaleTrain Sensors 40
Train Sensors HO/N 4.50
Very sensitive weather resistant sensors that can be completely hidden under the track. Sensors are also excellent as general purpose reed switches which can be mounted in locomotives for chuff-sensors, whistle triggers, etc. Magnets are required for triggering. (sold separately)
Package of 2 sensors shown.


Train Magnet, G Scale 4
Train Magnet HO/On30 Scale2.50

Very strong Neodymium Iron Boron magnets with removable magnet mounts (G Scale only) that are used to trigger Train Sensors. Strong magnets allow up to 1 inch sensing distance for G scale and about 1/2 inch HO scale.

Screwdriver + Magnet Tool

Screwdriver + Magnet Tool 2

Screwdriver with small blade, perfect for screw down terminals; and a strong magnet on the end for triggering sensors.

Protection & Reversing Diodes

10 AMP Diode with pigtails and wire nuts. 1.50
10 AMP diode with pigtail wires and wire nuts for easy installation.
10 AMP Diode with leads. 0.50
1 AMP Diode with leads. 0.50

Interconnection Cables

Straight cable for StationMaster to YardMaster connections. 3.50
Startech TX3SPLITTER Y Cable for StationMaster to multiple YardMaster-5 connections. Used for attaching one StationMaster to two or more YardMasters. 7.99

External Relay Modules

YardMaster/StationMaster-6 Relay + cable 9.50

10 AMP Relay module that can be added to the YardMaster or StationMaster-6 for advanced hookups. Includes the attaching data cable. See the manuals for details.



Track Isolators

Code 332 Isolator (Large scale trains) 6.50

Split-Jaw code 332 brass insulating clamp. Add a wire to the screws for easy track connections.


Repair Service

Repair service 35

Repair service for out of warranty units. (older than 1 year) Return address will be sent with order. Does not include software updates.


Free Stuff

5mm LED Free Bi color RED GREEN LEDs, common anode, diffused. These would work for a YardMaster signal light. (See manual for details)
5mm LED Free Bi color RED GREEN LEDs, common anode, water clear. These would work for a YardMaster signal light. (See manual for details)
5mm LED Free RED.
1000uf capacitors Free Come and get 'em. Too large to fit inside our units so we have no use for them.

We are giving away some parts which are no longer needed free with any order. Please send an e-mail with the quantity desired.