---
product_id: 66486938
title: "Jeirdus LC/UPC Duplex SM(9/125) Fiber Optic Loopback Module Connector Tester Adapter"
brand: "jeirdus"
price: "$514"
currency: MXN
in_stock: true
reviews_count: 2
url: https://www.desertcart.mx/products/66486938-jeirdus-lc-upc-duplex-sm-9-125-fiber-optic-loopback
store_origin: MX
region: Mexico
---

# Return loss 45~60 dB Repeatability ≤ 0.10 dB Insertion loss ≤ 0.20 dB Jeirdus LC/UPC Duplex SM(9/125) Fiber Optic Loopback Module Connector Tester Adapter

**Brand:** jeirdus
**Price:** $514
**Availability:** ✅ In Stock

## Summary

> 🔍 Test smarter, not harder — flawless fiber diagnostics at your fingertips!

## Quick Answers

- **What is this?** Jeirdus LC/UPC Duplex SM(9/125) Fiber Optic Loopback Module Connector Tester Adapter by jeirdus
- **How much does it cost?** $514 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/66486938-jeirdus-lc-upc-duplex-sm-9-125-fiber-optic-loopback)

## 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 within 0.10 dB guarantees dependable test results
- • **Durable Ceramic Sleeve:** Robust ceramic connector sleeve for seamless, long-lasting fiber connections
- • **Effortless Duplex Design:** Duplex clips hold connectors firmly for quick, accurate insertion and testing
- • **Precision Signal Integrity:** Ultra-low insertion loss ensures crystal-clear loopback testing every time
- • **Reliable Network Diagnostics:** High return loss (45~60 dB) isolates issues with pinpoint accuracy

## Overview

The LC/UPC Duplex SM(9/125) Fiber Optic Loopback Module is engineered for professional-grade fiber optic testing and network troubleshooting. Featuring ultra-low insertion loss, high return loss, and exceptional repeatability, it ensures precise signal loopback for isolating network issues. Its durable ceramic sleeve and duplex clip design provide reliable, easy-to-use connections, making it an essential tool for network managers and engineers aiming for flawless fiber 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.

## Features

- LC/UPC Duplex SM(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 tested before shipping,Ease and accuracy of insertion as duplex clips hold connectors togethe

## Product Details

- **Brand:** Jeirdus
- **Connector type:** lc
- **Cable type:** Fibre Optic
- **Compatible devices:** Modem
- **Special feature:** Data Transfer

## Images

![Jeirdus LC/UPC Duplex SM(9/125) Fiber Optic Loopback Module Connector Tester Adapter - Image 1](https://m.media-amazon.com/images/I/31soVP4QDAL.jpg)

## Available Options

This product comes in different **Colour Name, Size Name** options.

## Customer Reviews

### ⭐ 







  
  
    Don't bother
  

*by P***L on Reviewed in the United Kingdom on 27 October 2020*

It comes apart too easily and gives high readings.I've binned it

### ⭐⭐⭐⭐⭐ 







  
  
    The reviews and ratings for the traders
  

*by P***R on Reviewed in the United Kingdom on 29 June 2019*

Great product. Exactly as describedand ideal for me.

## 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

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**Shop now:** [https://www.desertcart.mx/products/66486938-jeirdus-lc-upc-duplex-sm-9-125-fiber-optic-loopback](https://www.desertcart.mx/products/66486938-jeirdus-lc-upc-duplex-sm-9-125-fiber-optic-loopback)

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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-01-26*