Welcome to RR Concepts

2023 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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If this is a gift add "GIFT" to cart here. We will not send an order reply e-mail and the package will be sent without our name on the box. Please contact us for the status of the oder.


The YardMaster is a multi-function "do-it-all" module but sometimes only a basic operation is needed. For this reason the YardMaster can be ordered in two different configurations; the YardMaster-SM, and the YardMaster-Fuill Featured.

The YardMaster-SM is a cost-effective version that can be used for StationMaster and simple switching applications. (Reversing loops, etc.) If you are connecting to a StationMaster or just need the internal relay and turnout controls then this version will work. The SM version will not contain the current sensor or signal lamp control relay and connector.

The standard Full Featured YardMaster contains all features and will work everywhere in all hookups. This is the most flexible unit and recommended if the setup will be changed in the future. It will work with or without a StationMaster hookup.
YardMaster SM Version

Does not include signal light relays, or current sensor.
This is the good choice when used with a StationMaster.

YardMaster Full Featured

Signal light relays and current sensor included.


Full Featured YardMaster-5


The StationMaster is available in both a VERSION 5 or VERSION 6 hardware configuration. Both versions perform all basic StationMaster operations, but the 6 version has additional features and controls. See the StationMaster page for details.

Both StationMaster versions are 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.


Performs Station Stops or Reversing operations.
140 - 5 AMP

150 - 10 AMP


All the features of the StationMaster-5 with additional hardware features for added functionality. A bypass cable is included which will allow full manual override by adding a switch to the cable.
150 - 5 AMP

160 - 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.

StationMaster / SHUTTLE

The StationMaster SHUTTLE is a self-adjusting back-and-forth reversing unit with realistic accelerations and decelerations. The SHUTTLE will sense the ends of the track (diode section) 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.

StationMaster / SHUTTLE 5 AMP 130
StationMaster / SHUTTLE 10 AMP 140
Reversing Diode Kit

Contains: Two code 332 (Split-Jaw large scale) track Isolators, Two 1 AMP diodes ready to be attached to the isolators, and an extra diode. (just in case). One Shuttle and the Reversing Kit is everything needed for a reversing setup.


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. Used to prevent damaging reversed voltage from entering StationMaster-5 units for some hookups. See hookup diagrams for details and usage. Usually not required when a StationMaster-6 is used.
10 AMP Diode with leads. 0.50
1 AMP Diode with leads used for reversing. Can be connected across track isolators on ends. 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) 5.25

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.


Upgrade Service

Upgrade service 45

Upgrade service for Legacy StationMaster-5 units to convert to current StationMaster-5 hardware and software. Return address will be sent with order.Please note that very old units may not be upgradable. Older "Reverser" and "StationStop" units can also be upgraded. Current software includes the reversing capability and all other features described in the StationMaster-5 manual.


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.