{"product_id":"circuitron-5202-dt-2-grade-crossing-detection-unit-w-full-logic","title":"Circuitron 5202 DT-2 Grade Crossing Detection (Full Logic, Bidirectional, 4 Opto-Sensors Included)","description":"\u003cp\u003eThe \u003cstrong\u003eCircuitron 5202 DT-2 Grade Crossing Detection Unit w\/Full Logic\u003c\/strong\u003e is Circuitron's flagship \u003cstrong\u003ebidirectional grade-crossing detection circuit\u003c\/strong\u003e — built to duplicate prototype crossing behaviour for any train length from a single locomotive to a 100-car drag.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does:\u003c\/strong\u003e Uses four \u003cstrong\u003eOpto-Sensors\u003c\/strong\u003e (included) embedded between the ties — two on each side of the crossing — to produce true prototype action: crossing flashers activate as the train approaches, remain active while the train occupies the crossing, and turn off only after the rear of the train clears. Works with AC, DC, or DCC track power. No modifications to rolling stock required.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDetection method:\u003c\/strong\u003e 4 × Opto-Sensors (included)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirection:\u003c\/strong\u003e Fully bidirectional\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrain length:\u003c\/strong\u003e Independent — handles 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\u003eOutput:\u003c\/strong\u003e Logic level — drives Circuitron flashers (FL-2 \/ FL-2HD), bell (BR-3), external relay (ER-1 \/ ER-2)\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\u003eCircuitron SKU:\u003c\/strong\u003e 5202 (Walthers 800-5202)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e The most prototype-accurate grade-crossing circuit on the market. Pair with FL-2HD (5122) for flashers and BR-3 (5703) for the recorded bell.\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":45098463101110,"sku":"800-5202","price":69.7,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/5131\/1286\/files\/57_1512c817-15ca-4cf7-a18b-5531d17b704c.png?v=1779570246","url":"https:\/\/oakvillemodeltrains.com\/products\/circuitron-5202-dt-2-grade-crossing-detection-unit-w-full-logic","provider":"Oakville Model Trains Depot","version":"1.0","type":"link"}