Three-Rail Innovations' Two-Relay Controller operates AC or DC powered trackside accessories, controls train power, operates track switches, and makes running your trains more interesting and safer.

The Two-Relay Controller:

• Has two isolated outside-rail inputs and two double-pole relays.
• Provides prototypic operating modes for any trackside accessory.
• Has specific features for train control and track switch operation.
• Is activated by any engine or rolling stock, even when track power is off.
• Provides precise activations by the length of a track block.
• Can employ short isolated track blocks to minimize insulating outside rails.
• Can activate a feature when a train is between track blocks.
• Can activate a feature by train direction.
• Allows an isolated track block to operate multiple accessories.
• Allows relay activation by combinations of track blocks.
• Isolates accessory power from the track so derailments don't cause problems and your train transformers can be fully utilized.

Click for a description, pictures, and technical details.

The Two-Relay Controller provides twenty features for operating trackside accessories, controlling trains, providing train safety, and operating track switches.

The 2RC has two inputs and two double-throw relays. Each relay can, optionally, turn one accessory off and another on.

More than one accessory can be activated by each output. For example, two flashing crossbucks placed on either side of the track at a highway crossing are wired in parallel and are counted as one accessory. Or, a whole string of street lights are wired together and are activated by the same Controller output.

Click the bar to discover what the 2RC can do, why it is better than any other trackside accessory operating technique, and what is needed to use it.

The Two-Relay Controller comes with a complete instruction manual. It shows how to fully utilize the 2RC to add trackside accessory action to your layout. Even if your wiring experience is limited, it will show you how to construct track blocks and use them to operate block signals, flashing crossbucks, and any other trackside accessory.

Click the bar to review a summary of the 2RC manual.

Now that you have seen what the Two-Relay Controller will do, you need one for your layout. Click the bar to order one.

Still have questions. Send us an e-mail for an answer.