{"product_id":"circuitron-sd-2-three-position-semaphore-driver-5520","title":"Circuitron SD-2 Three-Position Semaphore Driver #5520","description":"\u003cp\u003eDrive a semaphore to three positions using a Tortoise switch machine and block-occupancy detectors. At least two detected blocks are required for all three indications. The SD-2 needs 10–18V DC; the signal, actuator, and detectors are separate.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eManufacturer: Circuitron\u003c\/li\u003e\n\u003cli\u003ePart number: 5520\u003c\/li\u003e\n\u003cli\u003eApplication: Model railroad electronics and accessories\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Circuitron","offers":[{"title":"Default Title","offer_id":53045631811896,"sku":"CIR5520","price":34.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/CIR5520-1__31861.1671410939.jpg?v=1790530593","url":"https:\/\/munclemikes.com\/products\/circuitron-sd-2-three-position-semaphore-driver-5520","provider":"Muncle Mikes","version":"1.0","type":"link"}