--- product_id: 445782806 title: "LC/UPC Duplex SM(9/125) Fibre Optic Loopback Module Connector Tester Adapter" brand: "jeirdus" price: "€ 31.52" currency: EUR in_stock: true reviews_count: 5 category: "Jeirdus" url: https://www.desertcart.be/products/445782806-lc-upc-duplex-sm-9-125-fibre-optic-loopback-module store_origin: BE region: Belgium --- # 45~60 dB Return Loss ≤0.20 dB Insertion Loss LC/UPC Duplex Connector LC/UPC Duplex SM(9/125) Fibre Optic Loopback Module Connector Tester Adapter **Brand:** jeirdus **Price:** € 31.52 **Availability:** ✅ In Stock ## Summary > 🔍 Test smarter, troubleshoot faster — never miss a network beat! ## Quick Answers - **What is this?** LC/UPC Duplex SM(9/125) Fibre Optic Loopback Module Connector Tester Adapter by jeirdus - **How much does it cost?** € 31.52 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/445782806-lc-upc-duplex-sm-9-125-fibre-optic-loopback-module) ## Best For - jeirdus enthusiasts ## Why This Product - Trusted jeirdus brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Consistent Performance:** Repeatability ≤0.10 dB guarantees dependable results every test cycle. - • **Durable Ceramic Sleeve:** Robust ceramic sleeve connection enhances longevity and stable fiber alignment. - • **Effortless Duplex Handling:** Duplex clips secure connectors for seamless, hassle-free insertion and removal. - • **Precision Signal Integrity:** Ultra-low insertion loss ≤0.20 dB ensures crystal-clear loopback testing accuracy. - • **Reliable Network Diagnostics:** High return loss (45~60 dB) isolates network issues with pinpoint precision. ## Overview The Jeirdus LC/UPC Duplex SM (9/125) Fiber Optic Loopback Module is engineered for high-precision fiber optic testing and network troubleshooting. Featuring ultra-low insertion loss (≤0.20 dB), superior return loss (45~60 dB), and exceptional repeatability (≤0.10 dB), it ensures reliable diagnostics. Its ceramic sleeve and duplex clip design provide durable, easy-to-use connections, making it an essential tool for professionals aiming to maintain flawless network performance. ## Description Fiber Loop back is designed to provide a media of return patch for a fiber optic signal; typically it is used for fiber optic testing applications or network restorations. For the testing applications, the loopback signal is used for diagnosing a problem. Sending a loopback test to network equipment, one at a time, is a technique for isolating a problem. Review: Loop back Review: Ottimo Accoppiatore LC - Ottimo prodotto.Consegnato nei tempi stabiliti e dichiarati. Ho avuto modo di usarlo immediatamente subito dopo la consegna. Ha funzionato senza problemi. Direi consigliato ## Features - LC/UPC Duplex (9/125) Fiber Optic Loopback - Insertion loss ¡Ü 0.20 dB,Return loss 45~60 dB,Repeatability ¡Ü 0.10 dB,Changeability ¡Ü 0.20 dB,This adapters uses ceramic sleeve to connect between two SC fiber Optic cables. - Fiber Optic Loopback Cables provide a return signal for fiber optic equipment which can be using for tesing purposes and isolating any network issues - 100% Functionally d before shipping,Ease and accuracy of insertion as duplex clips hold connectors togethe ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07DG3PLP1 | | Brand | Jeirdus | | Brand Name | Jeirdus | | Cable Type | Fiber Optic | | Cable type | Fiber Optic | | Color | LC-OS1 | | Compatible Devices | Surveillance Camera | | Compatible Phone Models | No Compatible Phone Models | | Compatible devices | Surveillance Camera | | Compatible phone models | No Compatible Phone Models | | Connector Gender | Male-to-Female | | Connector Type | Lc/Pc-lc/Pc | | Connector type | Lc/Pc-lc/Pc | | Customer Reviews | 4.4 out of 5 stars 86 Reviews | | Data Transfer Rate | 100 Gigabits Per Second | | Indoor Outdoor Usage | Indoor | | Item Shape | Round | | Item Weight | 10 Grams | | Manufacturer | Jeirdus | | Model | FBM-HLQ-SLC | | Model Name | FBM-HLQ | | Other Special Features of the Product | Data Transfer | | Recommended Uses For Product | fiber optic testing and network troubleshooting | | Special features | Data Transfer | | UPC | 669591920557 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Jeirdus - **Connector type:** Lc/Pc-lc/Pc - **Cable type:** Fiber Optic - **Compatible devices:** Surveillance Camera - **Special features:** Data Transfer ## Images ![LC/UPC Duplex SM(9/125) Fibre Optic Loopback Module Connector Tester Adapter - Image 1](https://m.media-amazon.com/images/I/31soVP4QDAL.jpg) ![LC/UPC Duplex SM(9/125) Fibre Optic Loopback Module Connector Tester Adapter - Image 2](https://m.media-amazon.com/images/I/31yy9n-CYiL.jpg) ![LC/UPC Duplex SM(9/125) Fibre Optic Loopback Module Connector Tester Adapter - Image 3](https://m.media-amazon.com/images/I/316UoSG007L.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Loop back *by A***R on 13 August 2025* ### ⭐⭐⭐⭐⭐ Ottimo Accoppiatore LC *by G***A on 2 August 2021* Ottimo prodotto.Consegnato nei tempi stabiliti e dichiarati. Ho avuto modo di usarlo immediatamente subito dopo la consegna. Ha funzionato senza problemi. Direi consigliato ### ⭐⭐⭐⭐ Alles gut, danke *by N***I on 13 December 2021* Entspricht der Beschreibung.. ## Frequently Bought Together - Jeirdus LC/UPC Fiber Optic Loopback Duplex SM 9/125 Module Connector Tester Adapter - LC/UPC Fiber Optic Circuitors Connector SM & MM Fiber Optic Loopback Adapter LC Interface Signal Loop Connector (LC/UPC SM-9/125) - Visual Fault Locator 30KM, VFL Fiber Optic Tester Kit - Include Single Mode 9/125um FC Male to LC Female Adapter, Light Pen for Fiber Network Cable Test --- ## 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.be/products/445782806-lc-upc-duplex-sm-9-125-fibre-optic-loopback-module](https://www.desertcart.be/products/445782806-lc-upc-duplex-sm-9-125-fibre-optic-loopback-module) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-05-10*