{"product_id":"tp-link-tl-sm321b-2-1000base-bx-wdm-bi-directional-sfp-module-2km-lc-simplex-ddm-msa-compliant","title":"TP-Link TL-SM321B-2 | 1000Base-BX WDM Bi-Directional SFP Module – 2km LC Simplex | DDM | MSA Compliant","description":"\u003cp data-start=\"270\" data-end=\"698\"\u003eThe \u003cstrong data-start=\"274\" data-end=\"297\"\u003eTP-Link TL-SM321B-2\u003c\/strong\u003e is a \u003cstrong data-start=\"303\" data-end=\"344\"\u003eGigabit WDM Bi-Directional SFP module\u003c\/strong\u003e engineered for \u003cstrong data-start=\"360\" data-end=\"409\"\u003ehigh-efficiency, cost-saving fiber networking\u003c\/strong\u003e over a \u003cstrong data-start=\"417\" data-end=\"464\"\u003esingle strand of 9\/125 μm single-mode fiber\u003c\/strong\u003e. Using WDM (Wavelength Division Multiplexing) technology, it \u003cstrong data-start=\"526\" data-end=\"549\"\u003etransmits at 1310nm\u003c\/strong\u003e and \u003cstrong data-start=\"554\" data-end=\"576\"\u003ereceives at 1550nm\u003c\/strong\u003e, allowing full-duplex communication over a single fiber line—\u003cstrong data-start=\"638\" data-end=\"697\"\u003eideal for enterprise, campus, or building interconnects\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"700\" data-end=\"1012\"\u003eThis module is fully \u003cstrong data-start=\"721\" data-end=\"742\"\u003eSFP-MSA compliant\u003c\/strong\u003e, features \u003cstrong data-start=\"753\" data-end=\"792\"\u003eDigital Diagnostic Monitoring (DDM)\u003c\/strong\u003e for real-time link performance analysis, and is \u003cstrong data-start=\"841\" data-end=\"858\"\u003ehot-swappable\u003c\/strong\u003e, making it effortless to install without interrupting operations. Pair it with the \u003cstrong data-start=\"942\" data-end=\"957\"\u003eTL-SM321A-2\u003c\/strong\u003e to complete a \u003cstrong data-start=\"972\" data-end=\"1011\"\u003ebidirectional fiber link up to 2 km\u003c\/strong\u003e.\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0637\/2838\/6287\/files\/TL-SM321B-2_UN__R_large_1596528553756e.jpg?v=1752964621\" alt=\"\"\u003e\u003c\/p\u003e\n\u003chr data-start=\"1014\" data-end=\"1017\"\u003e\n\u003ch2 data-start=\"1019\" data-end=\"1043\"\u003e\u003cstrong data-start=\"1022\" data-end=\"1043\"\u003eWhat’s in the Box\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-start=\"1045\" data-end=\"1104\"\u003e\n\u003cli data-start=\"1045\" data-end=\"1083\"\u003e\n\u003cp data-start=\"1047\" data-end=\"1083\"\u003eTP-Link TL-SM321B-2 WDM SFP Module\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1084\" data-end=\"1104\"\u003e\n\u003cp data-start=\"1086\" data-end=\"1104\"\u003eInstallation Guide\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1106\" data-end=\"1109\"\u003e\n\u003ch2 data-start=\"1111\" data-end=\"1131\"\u003e\u003cstrong data-start=\"1114\" data-end=\"1131\"\u003eMain Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"1133\" data-end=\"1709\"\u003e✅ \u003cstrong data-start=\"1135\" data-end=\"1169\"\u003eWDM Bi-Directional Transceiver\u003c\/strong\u003e – Transmit at 1310 nm, receive at 1550 nm\u003cbr data-start=\"1211\" data-end=\"1214\"\u003e✅ \u003cstrong data-start=\"1216\" data-end=\"1245\"\u003eSingle-Fiber Transmission\u003c\/strong\u003e – Up to 2 km using 9\/125 μm SMF\u003cbr data-start=\"1277\" data-end=\"1280\"\u003e✅ \u003cstrong data-start=\"1282\" data-end=\"1309\"\u003e1.25 Gbps Gigabit Speed\u003c\/strong\u003e – Stable high-speed data transmission\u003cbr data-start=\"1347\" data-end=\"1350\"\u003e✅ \u003cstrong data-start=\"1352\" data-end=\"1376\"\u003eLC Simplex Connector\u003c\/strong\u003e – Compact form for space-saving fiber setups\u003cbr data-start=\"1421\" data-end=\"1424\"\u003e✅ \u003cstrong data-start=\"1426\" data-end=\"1442\"\u003eSupports DDM\u003c\/strong\u003e – Real-time diagnostics and link health monitoring\u003cbr data-start=\"1493\" data-end=\"1496\"\u003e✅ \u003cstrong data-start=\"1498\" data-end=\"1519\"\u003eSFP-MSA Compliant\u003c\/strong\u003e – Compatible with a wide range of SFP slots\u003cbr data-start=\"1563\" data-end=\"1566\"\u003e✅ \u003cstrong data-start=\"1568\" data-end=\"1585\"\u003eHot Swappable\u003c\/strong\u003e – Non-disruptive maintenance and upgrades\u003cbr data-start=\"1627\" data-end=\"1630\"\u003e✅ \u003cstrong data-start=\"1632\" data-end=\"1666\"\u003eIdeal for Use with TL-SM321A-2\u003c\/strong\u003e – Build a cost-efficient, full-duplex link\u003c\/p\u003e\n\u003chr data-start=\"1711\" data-end=\"1714\"\u003e\n\u003ch2 data-start=\"1716\" data-end=\"1746\"\u003e\u003cstrong data-start=\"1719\" data-end=\"1746\"\u003eDetailed Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"1748\" data-end=\"1763\"\u003e\u003cstrong data-start=\"1748\" data-end=\"1761\"\u003eData Rate\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1764\" data-end=\"1775\"\u003e\n\u003cli data-start=\"1764\" data-end=\"1775\"\u003e\n\u003cp data-start=\"1766\" data-end=\"1775\"\u003e1.25 Gbps\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1777\" data-end=\"1793\"\u003e\u003cstrong data-start=\"1777\" data-end=\"1791\"\u003eWavelength\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1794\" data-end=\"1823\"\u003e\n\u003cli data-start=\"1794\" data-end=\"1809\"\u003e\n\u003cp data-start=\"1796\" data-end=\"1809\"\u003eTX: 1310 nm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1810\" data-end=\"1823\"\u003e\n\u003cp data-start=\"1812\" data-end=\"1823\"\u003eRX: 1550 nm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1825\" data-end=\"1845\"\u003e\u003cstrong data-start=\"1825\" data-end=\"1843\"\u003eConnector Type\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1846\" data-end=\"1858\"\u003e\n\u003cli data-start=\"1846\" data-end=\"1858\"\u003e\n\u003cp data-start=\"1848\" data-end=\"1858\"\u003eLC Simplex\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1860\" data-end=\"1876\"\u003e\u003cstrong data-start=\"1860\" data-end=\"1874\"\u003eFiber Type\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1877\" data-end=\"1905\"\u003e\n\u003cli data-start=\"1877\" data-end=\"1905\"\u003e\n\u003cp data-start=\"1879\" data-end=\"1905\"\u003e9\/125 μm Single-Mode Fiber\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1907\" data-end=\"1929\"\u003e\u003cstrong data-start=\"1907\" data-end=\"1927\"\u003eMaximum Distance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1930\" data-end=\"1936\"\u003e\n\u003cli data-start=\"1930\" data-end=\"1936\"\u003e\n\u003cp data-start=\"1932\" data-end=\"1936\"\u003e2 km\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1938\" data-end=\"1955\"\u003e\u003cstrong data-start=\"1938\" data-end=\"1953\"\u003eForm Factor\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1956\" data-end=\"1961\"\u003e\n\u003cli data-start=\"1956\" data-end=\"1961\"\u003e\n\u003cp data-start=\"1958\" data-end=\"1961\"\u003eSFP\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1963\" data-end=\"1982\"\u003e\u003cstrong data-start=\"1963\" data-end=\"1980\"\u003eHot Swappable\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1983\" data-end=\"1988\"\u003e\n\u003cli data-start=\"1983\" data-end=\"1988\"\u003e\n\u003cp data-start=\"1985\" data-end=\"1988\"\u003eYes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1990\" data-end=\"2031\"\u003e\u003cstrong data-start=\"1990\" data-end=\"2029\"\u003eDigital Diagnostic Monitoring (DDM)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2032\" data-end=\"2043\"\u003e\n\u003cli data-start=\"2032\" data-end=\"2043\"\u003e\n\u003cp data-start=\"2034\" data-end=\"2043\"\u003eSupported\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2045\" data-end=\"2072\"\u003e\u003cstrong data-start=\"2045\" data-end=\"2070\"\u003eStandards \u0026amp; Protocols\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2073\" data-end=\"2119\"\u003e\n\u003cli data-start=\"2073\" data-end=\"2088\"\u003e\n\u003cp data-start=\"2075\" data-end=\"2088\"\u003eIEEE 802.3z\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2089\" data-end=\"2099\"\u003e\n\u003cp data-start=\"2091\" data-end=\"2099\"\u003eTCP\/IP\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2100\" data-end=\"2119\"\u003e\n\u003cp data-start=\"2102\" data-end=\"2119\"\u003eSFP-MSA Compliant\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2121\" data-end=\"2139\"\u003e\u003cstrong data-start=\"2121\" data-end=\"2137\"\u003ePower Supply\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2140\" data-end=\"2146\"\u003e\n\u003cli data-start=\"2140\" data-end=\"2146\"\u003e\n\u003cp data-start=\"2142\" data-end=\"2146\"\u003e3.3V\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2148\" data-end=\"2168\"\u003e\u003cstrong data-start=\"2148\" data-end=\"2166\"\u003eCertifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2169\" data-end=\"2178\"\u003e\n\u003cli data-start=\"2169\" data-end=\"2178\"\u003e\n\u003cp data-start=\"2171\" data-end=\"2178\"\u003eFCC, CE\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2180\" data-end=\"2208\"\u003e\u003cstrong data-start=\"2180\" data-end=\"2206\"\u003eDimensions (W x D x H)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2209\" data-end=\"2253\"\u003e\n\u003cli data-start=\"2209\" data-end=\"2253\"\u003e\n\u003cp data-start=\"2211\" data-end=\"2253\"\u003e2.2 × 0.6 × 0.5 in (55.4 × 14.6 × 12.9 mm)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2255\" data-end=\"2285\"\u003e\u003cstrong data-start=\"2255\" data-end=\"2283\"\u003eEnvironmental Conditions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2286\" data-end=\"2493\"\u003e\n\u003cli data-start=\"2286\" data-end=\"2340\"\u003e\n\u003cp data-start=\"2288\" data-end=\"2340\"\u003eOperating Temperature: 0°C to 70°C (32°F to 158°F)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2341\" data-end=\"2396\"\u003e\n\u003cp data-start=\"2343\" data-end=\"2396\"\u003eStorage Temperature: -40°C to 85°C (-40°F to 185°F)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2397\" data-end=\"2447\"\u003e\n\u003cp data-start=\"2399\" data-end=\"2447\"\u003eOperating Humidity: 10%–90% RH, non-condensing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2448\" data-end=\"2493\"\u003e\n\u003cp data-start=\"2450\" data-end=\"2493\"\u003eStorage Humidity: 5%–90% RH, non-condensing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2495\" data-end=\"2498\"\u003e\n\u003ch2 data-start=\"2500\" data-end=\"2527\"\u003e\u003cstrong data-start=\"2503\" data-end=\"2527\"\u003eWarranty Information\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2529\" data-end=\"2783\"\u003eManufactures warrenty applied .\u003c\/p\u003e\n\u003chr data-start=\"2785\" data-end=\"2788\"\u003e\n\u003ch2 data-start=\"2790\" data-end=\"2814\"\u003e\u003cstrong data-start=\"2793\" data-end=\"2814\"\u003eBrand Description\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2816\" data-end=\"3085\"\u003e\u003cstrong data-start=\"0\" data-end=\"23\" data-is-only-node=\"\"\u003eTP-Link TL-SM321B-2\u003c\/strong\u003e is a high-performance 1000Base-BX WDM Bi-Directional SFP module designed for single-mode fiber transmission up to 2 km using LC simplex connectors. It supports Digital Diagnostic Monitoring (DDM), is MSA-compliant, and ensures reliable, high-speed Gigabit connectivity for enterprise and carrier-grade networks.\u003c\/p\u003e\n\u003chr data-start=\"3087\" data-end=\"3090\"\u003e\n\u003ch2 data-start=\"3092\" data-end=\"3102\"\u003e\u003cstrong data-start=\"3095\" data-end=\"3102\"\u003eSKU\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"3104\" data-end=\"3119\"\u003e\u003cstrong data-start=\"3104\" data-end=\"3119\"\u003eTL-SM321B-2\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"3121\" data-end=\"3124\"\u003e\n\u003ch2 data-start=\"3126\" data-end=\"3156\"\u003e\u003cstrong data-start=\"3129\" data-end=\"3156\"\u003ePractical Use Scenarios\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"3158\" data-end=\"3540\"\u003e🏢 \u003cstrong data-start=\"3161\" data-end=\"3198\"\u003eCampus \u0026amp; Enterprise Fiber Uplinks\u003c\/strong\u003e – Use in high-efficiency links with limited fiber strands\u003cbr data-start=\"3256\" data-end=\"3259\"\u003e🏫 \u003cstrong data-start=\"3262\" data-end=\"3286\"\u003eEducational Networks\u003c\/strong\u003e – Cost-effective bi-directional transmission over existing fiber lines\u003cbr data-start=\"3357\" data-end=\"3360\"\u003e🏠 \u003cstrong data-start=\"3363\" data-end=\"3393\"\u003ePoint-to-Point Fiber Links\u003c\/strong\u003e – Simplify setups between remote buildings\u003cbr data-start=\"3436\" data-end=\"3439\"\u003e🔌 \u003cstrong data-start=\"3442\" data-end=\"3467\"\u003ePair with TL-SM321A-2\u003c\/strong\u003e – Complete a two-module, full-duplex WDM link over a single fiber core\u003c\/p\u003e\n\u003chr data-start=\"3542\" data-end=\"3545\"\u003e\n\u003ch2 data-start=\"3547\" data-end=\"3589\"\u003e\u003cstrong data-start=\"3550\" data-end=\"3589\"\u003eDatasheets \/ Downloadable Resources\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"3591\" data-end=\"3659\"\u003e\u003ca href=\"https:\/\/www.omadanetworks.com\/us\/business-networking\/omada-accessory-module-cable\/tl-sm321b-2\/#specifications\"\u003e📄 Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003chr data-start=\"3661\" data-end=\"3664\"\u003e\n\u003ch2 data-start=\"3666\" data-end=\"3725\"\u003e\u003cstrong data-start=\"3669\" data-end=\"3725\"\u003eExcellence for the Australian and New Zealand Market\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"3727\" data-end=\"4046\"\u003eThe \u003cstrong data-start=\"3731\" data-end=\"3746\"\u003eTL-SM321B-2\u003c\/strong\u003e is tailored for the ANZ market, ensuring it meets \u003cstrong data-start=\"3797\" data-end=\"3839\"\u003eCE, FCC, and RoHS compliance standards\u003c\/strong\u003e. All units supplied locally are sourced through \u003cstrong data-start=\"3888\" data-end=\"3923\"\u003eauthorized TP-Link distributors\u003c\/strong\u003e, ensuring \u003cstrong data-start=\"3934\" data-end=\"3961\"\u003elocal warranty coverage\u003c\/strong\u003e, \u003cstrong data-start=\"3963\" data-end=\"4011\"\u003ecompliance with telecommunications standards\u003c\/strong\u003e, and \u003cstrong data-start=\"4017\" data-end=\"4045\"\u003ereliable product support\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr data-start=\"4048\" data-end=\"4051\"\u003e\n\u003ch2 data-start=\"4053\" data-end=\"4078\"\u003e\u003cstrong data-start=\"4056\" data-end=\"4078\"\u003e FAQs\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"4080\" data-end=\"4261\"\u003e\u003cstrong data-start=\"4080\" data-end=\"4146\"\u003eQ1. What is the compatible pair for TL-SM321B-2? (TL-SM321B-2)\u003c\/strong\u003e\u003cbr data-start=\"4146\" data-end=\"4149\"\u003eThe TL-SM321B-2 is designed to work with \u003cstrong data-start=\"4190\" data-end=\"4205\"\u003eTL-SM321A-2\u003c\/strong\u003e for full-duplex communication over a single fiber core.\u003c\/p\u003e\n\u003chr data-start=\"4263\" data-end=\"4266\"\u003e\n\u003cp data-start=\"4268\" data-end=\"4407\"\u003e\u003cstrong data-start=\"4268\" data-end=\"4328\"\u003eQ2. How far can TL-SM321B-2 transmit data? (TL-SM321B-2)\u003c\/strong\u003e\u003cbr data-start=\"4328\" data-end=\"4331\"\u003eIt supports transmission up to \u003cstrong data-start=\"4362\" data-end=\"4370\"\u003e2 km\u003c\/strong\u003e over 9\/125 μm \u003cstrong data-start=\"4385\" data-end=\"4406\"\u003esingle-mode fiber\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr data-start=\"4409\" data-end=\"4412\"\u003e\n\u003cp data-start=\"4414\" data-end=\"4579\"\u003e\u003cstrong data-start=\"4414\" data-end=\"4482\"\u003eQ3. What type of connector is used in TL-SM321B-2? (TL-SM321B-2)\u003c\/strong\u003e\u003cbr data-start=\"4482\" data-end=\"4485\"\u003eThe module features a \u003cstrong data-start=\"4507\" data-end=\"4531\"\u003eLC simplex connector\u003c\/strong\u003e, supporting \u003cstrong data-start=\"4544\" data-end=\"4578\"\u003eWDM single-strand transmission\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr data-start=\"4581\" data-end=\"4584\"\u003e\n\u003cp data-start=\"4586\" data-end=\"4749\"\u003e\u003cstrong data-start=\"4586\" data-end=\"4663\"\u003eQ4. Does TL-SM321B-2 support Digital Diagnostic Monitoring? (TL-SM321B-2)\u003c\/strong\u003e\u003cbr data-start=\"4663\" data-end=\"4666\"\u003eYes, the module supports \u003cstrong data-start=\"4691\" data-end=\"4698\"\u003eDDM\u003c\/strong\u003e, enabling real-time link and hardware diagnostics.\u003c\/p\u003e\n\u003chr data-start=\"4751\" data-end=\"4754\"\u003e\n\u003cp data-start=\"4756\" data-end=\"4942\"\u003e\u003cstrong data-start=\"4756\" data-end=\"4830\"\u003eQ5. Is TL-SM321B-2 compatible with third-party switches? (TL-SM321B-2)\u003c\/strong\u003e\u003cbr data-start=\"4830\" data-end=\"4833\"\u003eYes, it is \u003cstrong data-start=\"4844\" data-end=\"4865\"\u003eSFP-MSA compliant\u003c\/strong\u003e, making it compatible with many third-party switches supporting SFP modules.\u003c\/p\u003e","brand":"CCTV Tradie","offers":[{"title":"Default Title","offer_id":44530390040679,"sku":"SM321B-2-BC","price":32.64,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/8268\/2471\/files\/TL-SM321B-2_UN__R_large_1596528553756e.jpg?v=1788077053","url":"https:\/\/shop.underbrella.com.au\/products\/tp-link-tl-sm321b-2-1000base-bx-wdm-bi-directional-sfp-module-2km-lc-simplex-ddm-msa-compliant","provider":"UnderBrella","version":"1.0","type":"link"}