{"product_id":"circuitron-5502-bd-2-current-sensing-block-occupancy-detector","title":"Circuitron 5502 BD-2 Current-Sensing Block Occupancy Detector (2-Color Signal Output)","description":"\u003cp\u003eThe \u003cstrong\u003eCircuitron 5502 BD-2 Current Sensing Block Occupancy Detector\u003c\/strong\u003e is a \u003cstrong\u003ecurrent-sensing block-occupancy detector\u003c\/strong\u003e — provides a Red \/ Green signal output for a single isolated block of track.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does:\u003c\/strong\u003e Detects the current drawn by a locomotive or any lighted piece of rolling stock in an isolated block. Drives Red \/ Green LEDs (for 2-aspect signals) directly. Works with common-rail wired AC or DC track power and with most Command Control (DCC) systems. State-of-the-art IC design for high sensitivity and reliability.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDetection method:\u003c\/strong\u003e Current sensing (no track interruption)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput:\u003c\/strong\u003e 2-color (Red \/ Green) signal drivers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrack power:\u003c\/strong\u003e Common-rail AC \/ DC \/ DCC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDetects:\u003c\/strong\u003e Locomotives + any lighted rolling stock\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCircuitron SKU:\u003c\/strong\u003e 5502 (Walthers 800-5502)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e For trailing freight cars without lights, add a resistor wheel-set per car to keep the block flagged as occupied even when the loco has left.\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":45098469523638,"sku":"800-5502","price":26.74,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/5131\/1286\/files\/57_7d6721e7-ab18-4689-9bc0-4b7937b902f3.jpg?v=1777603342","url":"https:\/\/oakvillemodeltrains.com\/products\/circuitron-5502-bd-2-current-sensing-block-occupancy-detector","provider":"Oakville Model Trains Depot","version":"1.0","type":"link"}