--- product_id: 246585810 title: "LC/UPC Fiber Optic Circuitors Connector SM & MM Loopback Adapter Interface Signal Loop (LC/UPC SM-9/125)" brand: "cruiser" price: "10129CFA" currency: XOF in_stock: true reviews_count: 8 category: "Cruiser" url: https://www.desertcart.sn/products/246585810-lc-upc-fiber-optic-circuitors-connector-sm-and-mm-loopback store_origin: SN region: Senegal --- # Low insertion loss ≤0.1dB Loopback signal return High return loss ≥60dB LC/UPC Fiber Optic Circuitors Connector SM & MM Loopback Adapter Interface Signal Loop (LC/UPC SM-9/125) **Brand:** cruiser **Price:** 10129CFA **Availability:** ✅ In Stock ## Summary > 🔗 Plug into flawless network testing — don’t let your signal slip away! ## Quick Answers - **What is this?** LC/UPC Fiber Optic Circuitors Connector SM & MM Loopback Adapter Interface Signal Loop (LC/UPC SM-9/125) by cruiser - **How much does it cost?** 10129CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/246585810-lc-upc-fiber-optic-circuitors-connector-sm-and-mm-loopback) ## Best For - cruiser enthusiasts ## Why This Product - Trusted cruiser brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable & Repeatable:** Withstands 1000+ plug cycles without performance drop. - • **Wide Operating Range:** Performs flawlessly from -40°C to +80°C in any environment. - • **Compact & Lightweight:** Only 5g with a sleek LC/UPC interface for easy integration. - • **Seamless Compatibility:** Supports SM-9/125 & multiple fiber types for versatile use. - • **Precision Signal Diagnostics:** Isolate network issues with ultra-reliable loopback testing. ## Overview The LC/UPC Fiber Optic Loopback Adapter (SM-9/125) is a precision tool designed for network diagnostics and restoration. Featuring ultra-low insertion loss (≤0.1dB) and high return loss (≥60dB), it ensures accurate signal return for testing. Compatible with multiple fiber types and built to endure over 1000 plug cycles, this compact, lightweight adapter operates reliably across extreme temperatures, making it essential for professional-grade fiber optic network maintenance. ## Description Fiber Optic Loopback Adapter introduction：The Fiber Optic Loopback Adapter is the medium that sends back the fiber signal.Used for returning optical signals in test systems or network systems.Through the return signal, various potential anomalies in the network link can be detected.This test is commonly used,Provide an effective detection method to ensure the correct network link.Application:1. Equipment interconnection2. Device pig-tailingPremise networks3. Patch panel applications4. Communications connections5. Loopback for network components testingParameters :Connection Type：LC/UPCTest wavelength：1310 nm-1550 nmInsertion loss：Typical value ≤ 0.1dB, the maximum value ≤ 0.3dB Return loss ： ≥60.0dBRepeatability： ≤0.10dBExchangeability： ≤0.20dBPlug the performance： Plug 1000 timesOperating temperature -40 ℃ to + 80 ℃storage temperature -55 ℃ to + 85 ℃Weight：≈5gPackage includes: 1 * LC Fiber Optic Loopback Review: fiber LC loops Great - perfect, and no issue using these at all Review: As described - Fast ## Features - Fiber Optic Loopback provides a media of return path for a signal, whether the signal is for testing purposes or due to network restoration. - In the case of testing, the loopback signal is used for diagnosing a problem - Sending a loopback test to a network equipment, one at a time, is a technique for isolating a problem. - Low insertion loss，High return loss - LC/UPC interface is available in 5 styles: SM-9/125, MM-50/125, MM-62.5/125, OM3, OM4 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B089RBHQYY | | Best Sellers Rank | #91,534 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #30 in Fiber Optic Connectors | | Brand | Cruiser | | Cable Type | Fiber Optic | | Color | Blue | | Compatible Devices | Server | | Connector Gender | Female-to-Female | | Connector Type | Fiber Optic | | Customer Package Type | sealed anti-static bag | | Customer Reviews | 4.4 4.4 out of 5 stars (61) | | Date First Available | June 6, 2020 | | Indoor/Outdoor Usage | Indoor, Outdoor | | Item Weight | 0.634 ounces | | Item model number | LC/UPC SM-9/125 | | Manufacturer | anputaike | | Model Name | LC/UPC SM-9/125 | | Number of Items | 1 | | Outer Material | Plastic | | Package Dimensions | 2.09 x 1.42 x 0.51 inches | | Recommended Uses For Product | equipment interconnection, device pig-tailing, premise networks, patch panel applications, communications connections, network components testing | | Shape | Round | | Special Feature | LC/UPC Interface, Low Insertion Loss, High Return Wide Range of Applications | | Specification Met | UL | | UPC | 761989107325 | | Unit Count | 1 Count | ## Product Details - **Brand:** Cruiser - **Cable Type:** Fiber Optic - **Compatible Devices:** Server - **Connector Type:** Fiber Optic - **Special Feature:** LC/UPC Interface, Low Insertion Loss, High Return Wide Range of Applications ## Images ![LC/UPC Fiber Optic Circuitors Connector SM & MM Loopback Adapter Interface Signal Loop (LC/UPC SM-9/125) - Image 1](https://m.media-amazon.com/images/I/71iGMl+MYKL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ fiber LC loops Great *by L***S on October 5, 2025* perfect, and no issue using these at all ### ⭐⭐⭐⭐⭐ As described *by G***9 on December 8, 2023* Fast ### ⭐⭐⭐⭐⭐ Prefect *by J***N on August 7, 2023* Just what I needed ## Frequently Bought Together - LC/UPC Fiber Optic Circuitors Connector SM & MM Fiber Optic Loopback Adapter LC Interface Signal Loop Connector (LC/UPC SM-9/125) - Fiber Optic Loopback Adapter SC/UPC Interface Circuitors Signal Loopback Connector SM/MM/OM3/OM4 (SC/UPC SM-9/125) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/246585810-lc-upc-fiber-optic-circuitors-connector-sm-and-mm-loopback](https://www.desertcart.sn/products/246585810-lc-upc-fiber-optic-circuitors-connector-sm-and-mm-loopback) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-05-17*