{"product_id":"sel-2812mt-schweitzer-fiber-optic-transceiver","title":"SEL-2812MT | Schweitzer Fiber Optic Transceiver","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp\u003eThe SEL-2812MT is a rugged fiber optic transceiver module designed for reliable full-duplex serial communication in harsh environments. It supports IRIG-B time synchronization and high EMI immunity through multimode fiber isolation.\u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable width=\"100%\" style=\"height: 458.375px; width: 100%;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 36.3125px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 36.3125px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eCondition\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 36.3125px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 19.5938px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eBrand\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 19.5938px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003e\u003cspan data-sheets-root=\"1\"\u003e\u003cspan\u003eSchweitzer\u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 19.5938px;\"\u003eCategory\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 19.5938px;\"\u003e\n\u003cdiv class=\"mt-1 md:mt-0 column-left basis-2\/4 divide-y divide-rad-gray-10 border-b-[0.0625rem] border-rad-gray-10 md:border-0\"\u003e\n\u003cdiv class=\"flex gap-[1.75rem] md:gap-x-0 xl:gap-x-[1.875rem]\"\u003e\n\u003cdiv class=\"text-body-4 w-full font-light py-5 pl-4 md:py-6 md:pl-6 text-rad-gray-70\"\u003e\n\u003cdiv class=\"max-w-[8rem] break-words\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eRF\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24.0625px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 24.0625px;\"\u003e\u003cspan\u003ePart Number\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 24.0625px;\"\u003e\u003cspan data-sheets-root=\"1\"\u003eSEL-2812MT\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 31.9375px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 31.9375px;\"\u003e\u003cspan\u003eSubcategory\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 31.9375px;\"\u003e\u003cspan data-sheets-root=\"1\"\u003e\u003cspan\u003eRadio Transceiver\u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 25.0625px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 25.0625px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eData Rate\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 25.0625px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003eUp to 115.2 kbps, full duplex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 19.5938px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eLink Delay (Serial\/IRIG-B)\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 19.5938px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003e6 µs + 5 µs\/km \/ 15 µs + 5 µs\/km\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21.5938px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 21.5938px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eOptical Source\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 21.5938px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003e850 nm VCSEL transmitter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20.375px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 20.375px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eOutput Power Range\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 20.375px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003e–9 dBm to –15.5 dBm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 19.5938px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eReceive Sensitivity\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 19.5938px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003e–27.5 dBm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 32.25px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 32.25px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eFiber Type\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 32.25px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003eMultimode 50–200 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24.0625px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 24.0625px;\"\u003eConnector Type\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 24.0625px;\"\u003eST\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 27.1875px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 27.1875px;\"\u003ePower Source\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 27.1875px;\"\u003e\u003cspan\u003eDB-9 (Pin 1\/+5–10 VDC, Pin 3, Pin 7)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 19.5938px;\"\u003eMax Current Draw\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 19.5938px;\"\u003e\u003cspan\u003e15 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 39.1875px;\"\u003eIRIG-B Interface\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 39.1875px;\"\u003e\u003cspan\u003eDB-9 or IRIG-B jack (switch selectable)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 19.5938px;\"\u003eOptical Link Budget\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 19.5938px;\"\u003e\u003cspan\u003e12 dB\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 19.5938px;\"\u003eOperating Temperature\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 19.5938px;\"\u003e\u003cspan\u003e–40°C to +85°C (–40°F to +185°F)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 19.5938px;\"\u003eCompliance\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 19.5938px;\"\u003e\u003cspan\u003eCE, UKCA, FCC Part 15 Class A, ISO 9001\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 19.5938px;\"\u003eWeight\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 19.5938px;\"\u003e\u003cspan\u003e0.50 lbs\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003cspan style=\"font-size: 0.875rem;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003eISEL-2812MT\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe SEL-2812MT enables serial data communication at speeds up to 115.2 kbps over multimode fiber, supporting full-duplex operation with no jumper configuration required. It features an 850 nm VCSEL transmitter, ST fiber connectors, and compatibility with 50 to 200 µm core fiber types. The module offers IRIG-B time code support via switch-selectable DB-9 or IRIG-B jack connections. Power is drawn parasitically from DB-9 pins, and the device is housed for indoor use only, with full operational reliability between –40°C and +85°C. Its optical budget of 12 dB and robust electrical isolation make it suitable for demanding industrial applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-Speed Fiber Communication: Supports up to 115.2 kbps full-duplex data transfer with low latency, requiring no manual settings.\u003c\/li\u003e\n\u003cli\u003eLow Link Data Delay: Serial data delay of 6 µs + 5 µs\/km of fiber; IRIG-B delay of 15 µs + 5 µs\/km, ensuring accurate time synchronization.\u003c\/li\u003e\n\u003cli\u003eRobust Optical Transmission: Features an 850 nm VCSEL transmitter with a typical transmit level of –13 dBm and a receive sensitivity of –27.5 dBm.\u003c\/li\u003e\n\u003cli\u003eFlexible Power Options: Operates from DB-9 connector pins using parasitic power, drawing a maximum of only 15 mA.\u003c\/li\u003e\n\u003cli\u003eReliable Fiber Compatibility: Uses ST connectors and supports a range of SEL fiber types including SEL-C805, C807, and C808 for multimode 50–200 μm cores.\u003c\/li\u003e\n\u003cli\u003eIRIG-B Support: Switchable IRIG-B signal routing through either a DB-9 connector or dedicated jack.\u003c\/li\u003e\n\u003cli\u003eEnvironmental Hardening: Operates between –40°C to +85°C and meets Insulation Class 3 and Overvoltage Category 2, suitable for utility-grade deployments.\u003c\/li\u003e\n\u003cli\u003eCompact Installation Footprint: Projects just 127 mm from DB-9 connector, accommodating minimum bend radius of fiber cables.\u003c\/li\u003e\n\u003cli\u003eEMC Compliance and Safety: Designed under ISO 9001, CE marked, UKCA marked, and compliant with FCC Class A standards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe SEL-2812MT offers fast, interference-resistant fiber communication ideal for timing and control in substations and industrial automation.\u003c\/p\u003e","brand":"Schweitzer","offers":[{"title":"Default Title","offer_id":49105299276032,"sku":"SEL-2812MT","price":248.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/f73f7f914f654626b7963f6c8245ab72.jpg?v=1785544412","url":"https:\/\/alotechparts.com\/products\/sel-2812mt-schweitzer-fiber-optic-transceiver","provider":"Alo Tech Solutions","version":"1.0","type":"link"}