{"product_id":"circuitron-dt-4-rolling-stock-detector","title":"800-5204 DT-4 Rolling Stock Detector","description":"\u003ch2\u003eCircuitron DT-4 Rolling Stock Detector\u003c\/h2\u003e\u003cp\u003eThe Circuitron DT-4 is a versatile, four-circuit opto-electronic detection system designed for model railroad layouts of any scale. Whether monitoring hidden staging yards or controlling automated track sections, the DT-4 delivers reliable, independent detection for powered and unpowered rolling stock.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFour completely independent detection circuits on a single 3\" x 3\" circuit board\u003c\/li\u003e\n\u003cli\u003eOpto-electronic detection principle — no track modifications required\u003c\/li\u003e\n\u003cli\u003eCompatible with all scales and all rolling stock (powered and unpowered)\u003c\/li\u003e\n\u003cli\u003eIndividual sensitivity controls for each of the 4 circuits\u003c\/li\u003e\n\u003cli\u003eEach output controls up to 250 mA DC accessories or lamps\u003c\/li\u003e\n\u003cli\u003eRequires 6–20V DC power source (filtered or regulated recommended)\u003c\/li\u003e\n\u003cli\u003eCircuits can be used independently or in combination\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eThe DT-4 excels in hidden staging yard monitoring, blind siding detection, and panel lamp indication. Opto-sensors placed at track intervals allow operators to track train progress on a control panel even when trains are completely out of sight.\u003c\/p\u003e\u003cp\u003eOutputs can trigger panel lights, warning buzzers, or relays to cut track power. The DT-4 integrates seamlessly with other Circuitron products including the AR-2 Automatic Reverse Circuit, Time Delay circuits, and Turnout Controls.\u003c\/p\u003e\u003ch2\u003eCompatible Products\u003c\/h2\u003e\u003cp\u003ePairs with \u003ca href=\"\/collections\/circuitron\"\u003e\u003cstrong\u003e\u003cu\u003eCircuitron train control circuits\u003c\/u\u003e\u003c\/strong\u003e\u003c\/a\u003e and \u003ca href=\"\/collections\/scale-model-trains\"\u003e\u003cstrong\u003e\u003cu\u003emodel railroad electronics\u003c\/u\u003e\u003c\/strong\u003e\u003c\/a\u003e for complete layout automation.\u003c\/p\u003e","brand":"Circuitron Electronics","offers":[{"title":"Default Title","offer_id":46404173955303,"sku":"TOR5204","price":43.67,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0636\/7798\/9095\/products\/800-5204-dt-4-rolling-stock-detector-mpm-hobbies.jpg?v=1788154441","url":"https:\/\/mpmhobbies.com\/products\/circuitron-dt-4-rolling-stock-detector","provider":"MPM Hobbies","version":"1.0","type":"link"}