{"product_id":"circuitron-5122-fl-2hd-heavy-duty-alternating-grade-crossing-flasher-new","title":"Circuitron 5122 FL-2HD Heavy-Duty Alternating Grade-Crossing Flasher (500 mA \/ Side)","description":"\u003cp\u003eThe \u003cstrong\u003eCircuitron 5122 FL-2HD Heavy Duty Alternating Grade Crossing Flasher\u003c\/strong\u003e is the heavy-duty version of Circuitron's classic \u003cstrong\u003ealternating grade-crossing flasher\u003c\/strong\u003e — drives left-right crossbuck lights at the prototype flash rate.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does:\u003c\/strong\u003e Designed to be triggered by the output of any Circuitron grade-crossing detection circuit (DT-2 \/ DT-3). Heavy-duty output transistors raise the maximum load to \u003cstrong\u003e500 mA per side\u003c\/strong\u003e — recommended for boulevard crossing signals with multiple lights and for larger-scale signals (S, O, G) that draw more current. Can also be wired for continuous flashing or manual operation with a panel switch.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput current:\u003c\/strong\u003e 500 mA per side (alternating)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriggered by:\u003c\/strong\u003e Circuitron DT-2 (5202), DT-3 (5203), or any logic-level signal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor:\u003c\/strong\u003e Boulevard \/ multi-light crossing signals and large-scale (O \/ G) crossings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModes:\u003c\/strong\u003e Detector-triggered, continuous, or panel-switch manual\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCircuitron SKU:\u003c\/strong\u003e 5122 (Walthers 800-5122)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e For standard HO \/ N two-bulb crossbucks, the lower-current FL-2 is usually enough. Use FL-2HD only if you've got multiple bulbs per side or higher-current LEDs.\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":45098461921462,"sku":"800-5122","price":27.2,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/5131\/1286\/files\/57_e0ad9634-a4c9-4609-8422-7deb2516baa1.jpg?v=1777603307","url":"https:\/\/oakvillemodeltrains.com\/products\/circuitron-5122-fl-2hd-heavy-duty-alternating-grade-crossing-flasher-new","provider":"Oakville Model Trains Depot","version":"1.0","type":"link"}