{"product_id":"tp-link-sm321b","title":"TP-Link SM321B","description":"\u003cp\u003eTP-Link’s SM321B utilizes the latest 1000Base-BX standard, enabling data transmission over a single-mode fiber using different wavelengths for upstream and downstream. When paired with the SM321A, it can extend network coverage up to 20 km—ideal for reliable, high-speed, long-distance communication using TP-Link routers, switches, and media converters.\u003c\/p\u003e\n\u003ch3\u003e\u003cu\u003eCore Features:\u003c\/u\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUp to 20 km transmission distance with 9\/125 μm SMF (Single-Mode Fiber)\u003c\/li\u003e\n\u003cli\u003eBidirectional WDM communication on a single fiber\u003c\/li\u003e\n\u003cli\u003eCompatible with Small Form Pluggable Multi-Source Agreement (SFP-MSA)\u003c\/li\u003e\n\u003cli\u003eSupports Digital Diagnostic Monitoring (DDM)\u003c\/li\u003e\n\u003cli\u003eHot-swappable module design\u003c\/li\u003e\n\u003cli\u003eWork with TL-SM321A as a pair\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"TP-Link","offers":[{"title":"Default Title","offer_id":46237885071531,"sku":"TPL-SM321B","price":21.9,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0727\/8939\/3579\/files\/SM321B.jpg?v=1771969174","url":"https:\/\/primebusinessphone.com\/products\/tp-link-sm321b","provider":"PrimeBusiness Phone","version":"1.0","type":"link"}