{"id":4360,"date":"2025-08-04T00:00:00","date_gmt":"2025-08-04T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/products\/ls-sm551g-a2c-120km-link-pp-sfp-transceivers\/"},"modified":"2026-06-22T08:40:02","modified_gmt":"2026-06-22T08:40:02","slug":"ls-sm551g-a2c-120km-link-pp-sfp-transceivers","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/ar\/products\/ls-sm551g-a2c-120km-link-pp-sfp-transceivers","title":{"rendered":"\u0662\u0660. \u0645\u0631\u0627\u062c\u0639\u0629 LS-SM551G-A2C: \u0648\u062d\u062f\u0629 LINK-PP \u0645\u0646 \u0646\u0648\u0639 SFP \u0628\u0633\u0639\u0629 \u0661 \u062c\u064a\u062c\u0627\u0628\u062a\/\u062b\u0627\u0646\u064a\u0629 \u0648\u0645\u0633\u0627\u0641\u0629 \u0661\u0662\u0660 \u0643\u0645 \u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0627\u062a \u0627\u0644\u0623\u0644\u064a\u0627\u0641 \u0639\u0644\u0649 \u0645\u0633\u0627\u0641\u0627\u062a \u0637\u0648\u064a\u0644\u0629"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3a4265a8dc4d4588b72b3e41974c9935.jpg\" alt=\"LS-SM551G-A2C SFP modules\" class=\"wp-image-4358\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3a4265a8dc4d4588b72b3e41974c9935.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3a4265a8dc4d4588b72b3e41974c9935-300x178.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3a4265a8dc4d4588b72b3e41974c9935-1024x608.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3a4265a8dc4d4588b72b3e41974c9935-768x456.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3a4265a8dc4d4588b72b3e41974c9935-18x12.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">When it comes to long-haul fiber connectivity, not all SFP modules are created equal. LINK-PP\u2019s <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/476873.htm\"><strong>\u0663\u0664. LS-SM551G-A2C<\/strong><\/a> SFP module delivers <strong>exceptional 120km transmission distance<\/strong>, impressive <strong>\u0661\u0661. \u0627\u0644\u062a\u0648\u0627\u0641\u0642 \u0628\u064a\u0646 \u0639\u062f\u0629 \u0645\u0648\u0631\u0650\u0651\u062f\u064a\u0646<\/strong>, and a price point that makes it ideal for <strong>\u0661\u0662. \u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u0646\u0634\u0631 \u0639\u0644\u0649 \u0646\u0637\u0627\u0642 \u0648\u0627\u0633\u0639<\/strong>. Whether you\u2019re an enterprise network planner or a system integrator in need of reliable fiber connectivity over extreme distances, this module is designed to perform.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >Why LS-SM551G-A2C Stands Out<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u2705 <strong>Ultra-Long 120km Transmission<\/strong><br\/>With a 1550nm DFB laser and Super TIA + PIN photodetector, the <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/file\/datasheet\/ls-sm551g-a2c.pdf\">\u0663\u0664. LS-SM551G-A2C <\/a>\u0662. \u064a\u062f\u0639\u0645 <strong>up to 120km single-mode fiber (SMF)<\/strong> links at 1.25Gbps. That makes it a trusted choice for long-distance point-to-point applications\u2014like data center interconnects, metro access rings, and remote campus networking.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2705 <strong>Excellent Compatibility<\/strong><br\/>Designed to seamlessly integrate into mixed-vendor environments, this SFP module is <strong>fully compatible with<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Cisco GLC-EZX-SM-120<\/p><\/li><li><p>Juniper SFP-1GE-EZX-120<\/p><\/li><li><p>Brocade E1MG-EZX-120<\/p><\/li><li><p>Arista SFP-1G-EZX-120<\/p><\/li><li><p>Alcatel-Lucent SFP-GIG-EZX<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Plug it in\u2014no special configuration required.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2705 <strong>Best-in-Class Value<\/strong><br\/>Compared to similar extended-range SFP modules, <strong>LS-SM551G-A2C offers one of the best performance-to-price ratios<\/strong> in the market. For organizations looking to scale efficiently, every dollar counts\u2014and this module ensures ROI without sacrificing quality.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >Real-World Scenario: Surpassing 120km with Ease<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">One of our enterprise clients shared how the <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/476873.htm\">\u0663\u0664. LS-SM551G-A2C<\/a> <strong>surprised them during a rural fiber deployment<\/strong> project. Faced with a 125km fiber run between two branch locations\u2014where laying new infrastructure was not an option\u2014they needed a plug-and-play solution that would \u201cjust work.\u201d Most 1G modules couldn\u2019t maintain signal integrity over that distance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">After deploying LS-SM551G-A2C, they achieved <strong>a clean, stable link with strong power margin<\/strong>\u2014no signal regeneration required. It saved both time and operational costs.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >SFP 120km Modules Features at a Glance<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3708dd7e378943c4ae5d9a33f307eb7a.jpg\" alt=\"SFP 120km Modules\" class=\"wp-image-4359\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3708dd7e378943c4ae5d9a33f307eb7a.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3708dd7e378943c4ae5d9a33f307eb7a-300x178.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3708dd7e378943c4ae5d9a33f307eb7a-1024x608.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3708dd7e378943c4ae5d9a33f307eb7a-768x456.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3708dd7e378943c4ae5d9a33f307eb7a-18x12.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>\u0661\u0668.\u200f \u0627\u0644\u0645\u064a\u0632\u0629<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u0664. \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u0667. \u0645\u0639\u062f\u0644 \u0646\u0642\u0644 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Up to 1.25Gbps<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Optical Wavelength<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1550nm (DFB Laser)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u0662\u0663. \u0645\u0633\u0627\u0641\u0629 \u0627\u0644\u0625\u0631\u0633\u0627\u0644<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>\u0661. \u062d\u062a\u0649 \u0661\u0662\u0660 \u0643\u0645<\/strong> \u0664\u0665. (SMF)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u0662\u0669. \u0627\u0644\u0645\u0648\u0635\u0644<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0663. \u062f\u064a\u0648\u0628\u0644\u0650\u0643\u0633 \u0625\u0644 \u0633\u064a<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u0663. \u062f\u0639\u0645 \u0648\u0638\u064a\u0641\u0629 \u0627\u0644\u0645\u0631\u0627\u0642\u0628\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644\u064a\u0629 \u0627\u0644\u0631\u0642\u0645\u064a\u0629 (DOM)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Yes (Real-time Digital Diagnostic Monitoring)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u0663\u0669. \u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0661\u0668. \u0645\u0646 \u0660\u00b0\u0645 \u0625\u0644\u0649 +\u0667\u0660\u00b0\u0645<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Hot Pluggable<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0664\u0663. \u0646\u0639\u0645<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u0669. \u0646\u0638\u0627\u0645 \u0627\u0644\u062a\u063a\u0630\u064a\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0661\u0665. +\u0663,\u0663 \u0641\u0648\u0644\u062a<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u0662\u0666.\u200f \u0627\u0644\u0627\u0645\u062a\u062b\u0627\u0644<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>SFP MSA, SFF-8472, RoHS<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0661\u0668. \u0627\u0644\u062a\u0635\u062d\u064a\u062d \u0627\u0644\u0623\u0645\u0627\u0645\u064a \u0644\u0644\u0623\u062e\u0637\u0627\u0621 <strong>\u0661. \u0627\u0644\u0645\u0631\u0627\u0642\u0628\u0629 \u0627\u0644\u062a\u0634\u062e\u064a\u0635\u064a\u0629 \u0627\u0644\u0631\u0642\u0645\u064a\u0629 (<\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ar\/glossary\/ddm-dom-in-optical-transceivers\/\"><strong>\u0661\u0660. DOM<\/strong><\/a><strong>)<\/strong> is standard in today\u2019s SFP modules, the reliability and accuracy of LS-SM551G-A2C\u2019s monitoring\u2014especially over long distances\u2014make it a reassuring asset in mission-critical networks.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >Comparison: How It Beats Other 1G EZX Modules<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Compared to other 1G extended-range SFP modules tested in the field, <strong>LS-SM551G-A2C consistently earns praise for<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Stable signal transmission beyond 120km<\/strong><\/p><\/li><li><p><strong>Superior vendor compatibility without firmware issues<\/strong><\/p><\/li><li><p><strong>Cost-efficiency in volume deployment<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">For technical teams managing large networks, it checks all the boxes: <strong>performance, interoperability, and affordability<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Conclusion: A Go-To Module for Long-Haul Fiber Networks<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If your network infrastructure demands <strong>extended-range fiber connectivity with vendor flexibility and low TCO<\/strong>, LINK-PP\u2019s LS-SM551G-A2C is a smart choice. Whether it\u2019s for a metro ring upgrade or cross-campus connectivity, this SFP module delivers where others fall short.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 <strong>Explore Full Specs &amp; Download Datasheet:<\/strong><br\/>\ud83d\udd17 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/476873.htm\">Product Page \u2013 LS-SM551G-A2C<\/a><br\/>\ud83d\udd17 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/file\/datasheet\/ls-sm551g-a2c.pdf\">\u0661. \u0648\u0631\u0642\u0629 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a \u0628\u0635\u064a\u063a\u0629 PDF<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>\u0662\u0662. \u0627\u0643\u062a\u0634\u0641 \u0648\u062d\u062f\u0629 LINK-PP \u0645\u0646 \u0646\u0648\u0639 SFP \u0637\u0631\u0627\u0632 LS-SM551G-A2C \u2014 \u0648\u062d\u062f\u0629 \u0628\u0633\u0639\u0629 \u0661 \u062c\u064a\u062c\u0627\u0628\u062a\/\u062b\u0627\u0646\u064a\u0629 \u0648\u0645\u0633\u0627\u0641\u0629 \u0661\u0662\u0660 \u0643\u0645\u060c \u0630\u0627\u062a \u062a\u0648\u0627\u0641\u0642 \u0639\u0627\u0644\u064d\u060c \u0648\u0623\u0641\u0636\u0644 \u0642\u064a\u0645\u0629 \u0641\u064a \u0641\u0626\u062a\u0647\u0627 \u0644\u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u0646\u0634\u0631 \u0627\u0644\u0648\u0627\u0633\u0639\u0629 \u0627\u0644\u0646\u0637\u0627\u0642 \u0644\u0644\u0623\u0644\u064a\u0627\u0641.<\/p>","protected":false},"author":1,"featured_media":4358,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[28],"tags":[15,24,26],"class_list":["post-4360","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-products","tag-link-pp-1g-sfp-modules","tag-link-pp","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/ar\/wp-json\/wp\/v2\/posts\/4360","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resourceslp.szlogic.cn\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resourceslp.szlogic.cn\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ar\/wp-json\/wp\/v2\/comments?post=4360"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/ar\/wp-json\/wp\/v2\/posts\/4360\/revisions"}],"predecessor-version":[{"id":11279,"href":"https:\/\/resourceslp.szlogic.cn\/ar\/wp-json\/wp\/v2\/posts\/4360\/revisions\/11279"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ar\/wp-json\/wp\/v2\/media\/4358"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/ar\/wp-json\/wp\/v2\/media?parent=4360"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ar\/wp-json\/wp\/v2\/categories?post=4360"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ar\/wp-json\/wp\/v2\/tags?post=4360"}],"curies":[{"name":"\u0661. \u0648\u064e\u0628","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}