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Do you like to build your own circuits from scratch, or do you just want something that is installation-ready? Or are you somewhere in the middle? Perhaps you want a kit with all the components needed and want to save money by doing the assembly yourself, or you have your own parts and only need a circuit board.

Circuits4Tracks aims to have what you need, regardless of where on this spectrum you are.

While there are tips and circuit diagrams for free, bare circuit boards, boards with components kits, and fully assembled circuits are also available.

Our primary product is our Quad Occupancy Detector. This diode-drop current sensing detector has four detectors on one board. As a fully assembled unit, the price is $34.19 - that is only $8.55 per detector. If you would like to go the kit route, the cost is only $19.99 - only $4.50 per detector. Keep in mind that these prices are in Canadian dollars and we offer quantity discounts starting with as few as three of the same item.

Full details including documentation and application notes are available at

Ordering can be done on the website and we offer a flat rate shipping charge so there are no surprises at the checkout. If ordering before March 31, 2015 you can receive an additional 3% discount off your product total by entering ModelTrainForum as a coupon code at the checkout (no spaces and case is sensitive). PayPal is the best way to pay for quick shipping, but the checkout provides a way to print an order for mailing with a cheque or money order. Canadian customers also have the option of using Interac E-transfer.

In addition to our Quad Occupancy Detector, we also have a circuit that operates a DC locomotive back and forth automatically on a stretch of track, or around a loop while making an even number of stops on the loop. This product, called The Traverser, requires occupancy detection that may use any active-low detector but is optimized to work with our Quad Occupancy Detector. Details on the product are also available on our site.
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