{"product_id":"ubiquiti-uf-sm-1g-s-1-25g-sfp-bidi-transceiver-10-20km-simplex-lc","title":"Ubiquiti UF-SM-1G-S 1.25G SFP BIDI Transceiver - 10-20km Simplex LC","description":"\u003cp\u003eIn this review the author examines the Ubiquiti UF-SM-1G-S compatible SFP BIDI transceiver from Jeirdus and concludes it is a practical replacement for network engineers who need a reliable bidirectional single-fiber link. The bottom line: this module delivers carrier-class 1.25 Gb\/s performance over single LC simplex fiber for up to 20 km, making it a solid choice when conserving fiber or replacing failed SFPs is the priority. The review focuses on compatibility, real-world use, testing, and value for IT teams and integrators.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBidirectional WDM:\u003c\/strong\u003e Uses TX1310nm\/RX1550nm or TX1550nm\/RX1310nm to send and receive on a single LC fiber, saving fiber cabling and simplifying link design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25 Gb\/s Data Rate:\u003c\/strong\u003e Supports 1000BASE-BX-U and 1000BASE-BX-D standards for gigabit Ethernet links over long distances up to 20 km.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Engineered to work with Ubiquiti and compatible with Cisco-class equipment thanks to Jeirdus compatibility lab testing and coding adjustments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assurance:\u003c\/strong\u003e Each transceiver is individually tested prior to delivery to ensure link reliability and reduce deployment issues.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRegulatory and Warranty Coverage:\u003c\/strong\u003e Built from 100% new materials with CE and FCC markings and backed by a 3 year replacement plus lifetime warranty for long-term peace of mind.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe transceiver is aimed at network administrators, installers, and small to medium enterprise IT teams that need a cost-effective replacement for broken SFPs or who want to extend gigabit links over a single strand of fiber. It is particularly useful where fiber runs are limited and bidirectional WDM is the simplest solution to conserve cabling.\u003c\/p\u003e\n\u003cp\u003eIt is less appropriate for those who require multi-rate SFPs, specialty multimode links, or proprietary modules that depend on vendor-locked authentication beyond standard coding. Buyers who need multi-gig speeds above 1.25 Gb\/s should look for other transceiver classes.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with Ubiquiti WDM and many Cisco devices due to Jeirdus compatibility lab coding.\u003c\/li\u003e\n\u003cli\u003eSupports up to 20 km over single LC fiber, making it suitable for campus and metro links.\u003c\/li\u003e\n\u003cli\u003eIndividually tested units and regulatory compliance reduce deployment headaches.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLimited to 1.25 Gb\/s so it does not cover newer multi-gig or 10 GbE requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm Factor\u003c\/td\u003e\n\u003ctd\u003eSFP (1.25 Gb\/s)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiber Type\u003c\/td\u003e\n\u003ctd\u003eSingle-mode simplex LC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003eTX1310nm\/RX1550nm or TX1550nm\/RX1310nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandards\u003c\/td\u003e\n\u003ctd\u003e1000BASE-BX-U and 1000BASE-BX-D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Distance\u003c\/td\u003e\n\u003ctd\u003eUp to 20 km\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompliance\u003c\/td\u003e\n\u003ctd\u003eCE, FCC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e3 year replacement and lifetime warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eFor technicians who need a dependable, cost-conscious replacement for failed or missing SFPs, the Jeirdus compatible Ubiquiti UF-SM-1G-S style BIDI transceiver offers clear value: tested compatibility, single-fiber WDM operation to 20 km, and regulatory coverage with warranty support. It is a practical pick for gigabit single-mode links but not for those who require multi-gig bandwidth.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this module compatible with Ubiquiti devices?\u003c\/strong\u003e\u003cbr\u003eYes. It is designed to be compatible with Ubiquiti WDM SFP modules and has been coded and tested for broad interoperability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat distance can this transceiver support?\u003c\/strong\u003e\u003cbr\u003eIt supports links up to 20 km over single-mode fiber using a simplex LC connector.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the module carry warranty and certifications?\u003c\/strong\u003e\u003cbr\u003eYes. It is made from new materials, carries CE and FCC markings, and includes a 3 year replacement plus lifetime warranty.\u003c\/p\u003e","brand":"Jeirdus","offers":[{"title":"Default Title","offer_id":48235724505307,"sku":"B07D5DQ34P","price":32.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51jXZElYNkL._AC_5827363c-4a67-4cad-a2dd-41e04685b7b4.jpg?v=1770832507","url":"https:\/\/gearmusthave.com\/products\/ubiquiti-uf-sm-1g-s-1-25g-sfp-bidi-transceiver-10-20km-simplex-lc","provider":"GearMustHave","version":"1.0","type":"link"}