{"product_id":"circuitron-5522-bd-2hd-heavy-duty-block-detector","title":"Circuitron 5522 BD-2HD Heavy-Duty Block Occupancy Detector (2-Color Signal Output)","description":"\u003cp\u003eThe \u003cstrong\u003eCircuitron 5522 BD-2HD Heavy Duty Block Detector\u003c\/strong\u003e is the \u003cstrong\u003eheavy-duty version of the BD-2\u003c\/strong\u003e — current-sensing block detector with Red \/ Green signal-driver outputs for higher-current blocks.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does:\u003c\/strong\u003e Same Red \/ Green 2-aspect signal-driving capability as the BD-2, but with beefier output transistors for situations where the block may hold multiple sound-equipped locos or many lighted passenger cars. Works with common-rail AC \/ DC \/ DCC.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDetection method:\u003c\/strong\u003e Current sensing (heavy-duty)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput:\u003c\/strong\u003e 2-color (Red \/ Green) signal drivers — higher current\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\u003eCircuitron SKU:\u003c\/strong\u003e 5522 (Walthers 800-5522)\u003c\/li\u003e\n\u003c\/ul\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":45098472046774,"sku":"800-5522","price":39.84,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/5131\/1286\/files\/57_4f857944-f52f-47d8-b0a4-e996ac6d04cf.jpg?v=1779570426","url":"https:\/\/oakvillemodeltrains.com\/products\/circuitron-5522-bd-2hd-heavy-duty-block-detector","provider":"Oakville Model Trains Depot","version":"1.0","type":"link"}