{"product_id":"circuitron-5203-dt-3-grade-crossing-detector-single-direction","title":"Circuitron 5203 DT-3 Single-Direction Grade Crossing Detector (Opto-Sensor Based)","description":"\u003cp\u003eThe \u003cstrong\u003eCircuitron 5203 DT-3 Grade Crossing Detector Single Direction\u003c\/strong\u003e is a \u003cstrong\u003esingle-direction grade-crossing detection circuit\u003c\/strong\u003e — Circuitron's value-priced version of the DT-2 for one-way mainline situations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does:\u003c\/strong\u003e Uses proven OptoElectronic detection (Opto-Sensors mounted between the ties) to produce accurate grade-crossing action for any train length — from a single locomotive to a 100-car train — when the train approaches from one defined direction. No rolling-stock modifications. Works with AC, DC, or DCC; any scale.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDetection method:\u003c\/strong\u003e OptoElectronic (Opto-Sensors required, sold separately)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirection:\u003c\/strong\u003e Single direction (use DT-2 for bidirectional)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrain length:\u003c\/strong\u003e Independent — 1 to 100+ cars\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrack power:\u003c\/strong\u003e AC \/ DC \/ DCC (any system)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 10–18 V AC or DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput:\u003c\/strong\u003e Controls Circuitron flashers, BR-3 bell, external relays\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCircuitron SKU:\u003c\/strong\u003e 5203 (Walthers 800-5203)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e Step up to the DT-2 (5202) if your crossing sees traffic in both directions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAbout Circuitron:\u003c\/strong\u003e A USA-made model-railroad electronics specialist (Maryville, Illinois) founded in the 1970s. Famous for the industry-standard \u003cstrong\u003eTortoise\u003c\/strong\u003e slow-motion under-table switch machine and its surface-mount cousin the \u003cstrong\u003eSMAIL\u003c\/strong\u003e. The full range covers detection (block detectors, Opto-Sensor grade-crossing logic), automation (auto-reversers, external relays, twin-coil alternators), signal \/ lighting electronics (alternating flashers, ditch-light oscillators, strobe drivers), power supplies, and a complete set of Tortoise \/ SMAIL replacement parts plus the solderless \u003cstrong\u003eZipZ\u003c\/strong\u003e connection system. Most circuits work with AC, DC, or DCC track power unless specifically noted otherwise.\u003c\/p\u003e\u003cp\u003eIn stock at Oakville Model Trains Depot.\u003c\/p\u003e","brand":"Circuitron","offers":[{"title":"Default Title","offer_id":45098464215222,"sku":"800-5203","price":32.19,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/5131\/1286\/files\/57_3e36a35d-5c41-461f-b9c8-89b2da34123a.jpg?v=1777603317","url":"https:\/\/oakvillemodeltrains.com\/products\/circuitron-5203-dt-3-grade-crossing-detector-single-direction","provider":"Oakville Model Trains Depot","version":"1.0","type":"link"}