---
product_id: 46937827
title: "Networx® ISDN (PRI) RJ45 Loopback Tester"
brand: "networx®"
price: "$37.50"
currency: USD
in_stock: true
reviews_count: 10
category: "Networx®"
url: https://www.desertcart.ec/products/46937827-networx-isdn-pri-rj45-loopback-tester
store_origin: EC
region: Ecuador
---

# RJ45 female connector Compact blue design Lifetime warranty durability Networx® ISDN (PRI) RJ45 Loopback Tester

**Brand:** networx®
**Price:** $37.50
**Availability:** ✅ In Stock

## Summary

> 🔧 Test smarter, not harder — your network’s best sidekick!

## Quick Answers

- **What is this?** Networx® ISDN (PRI) RJ45 Loopback Tester by networx®
- **How much does it cost?** $37.50 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/46937827-networx-isdn-pri-rj45-loopback-tester)

## Best For

- networx® enthusiasts

## Why This Product

- Trusted networx® brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Rugged Design:** Fits tight spaces and resists dents for long-lasting field use.
- • **Essential Tech Arsenal:** A must-have for network pros to troubleshoot with confidence anywhere.
- • **Plug & Play Simplicity:** Instantly verify ISDN PRI connections without bulky equipment.
- • **Lifetime Warranty Assurance:** Built to last and backed for life, eliminating downtime worries.
- • **Reliable Link LED Indicator:** Visual confirmation of perfect network connectivity in seconds.

## Overview

The Networx® ISDN (PRI) RJ45 Loopback Tester is a compact, rugged, and user-friendly device designed for quick verification of ISDN PRI network connections. Featuring a durable blue molded design, RJ45 female connector, and a clear link LED indicator, it enables network professionals to easily detect wiring faults and confirm connectivity without bulky tools. Backed by a lifetime warranty, it’s an indispensable tool for efficient network troubleshooting in tight spaces.

## Description

An ISDN Loopback Tester is an exceedingly user friendly cable tester. Even the architecture is pretty simple. It looks like a simple plug at first glance but the compact, rugged design makes it highly portable and usable in the tightest corners. All you have to do is simply plug the Networx ISDN Loopback tester into the jack that you want to test or the one you are suspicious about. If the link LED on your switch is active, then that means that the connection is operating perfectly. These Loop back testers will make the life of a network administrator really easy. The Networx ISDN Loop back tester will negate the necessity to carry a bulky network hub around. Easily check for broken or shorted wires Check wall to switch connections easily without a cable Must have for all pc and network technicians A very user friendly and simple device Compact design allows for testing in the tightest of corners Molded architecture saves from dents and scratches for long lasting use

Review: Simple and good insurance all will work fine. Good craftsmanship. - worked flawlessly. I was instructed to build a cord, but didn't want to take a chance. This was cheap insurance it was done right. Keep one in your arsenal.
Review: So easy and convenient to install. - So easy and convenient to install.

## Features

- Color: Blue
- Style: Loopback
- Warranty: Lifetime Warranty
- Connector B: RJ45 Female
- Package Quantity: 1

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00E4OKIIC |
| Best Sellers Rank | #33,011 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #53 in Network & Cable Testers |
| Customer Reviews | 4.4 4.4 out of 5 stars (451) |
| Date First Available | January 15, 2019 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.8 ounces |
| Item model number | LB-IPRIS |
| Manufacturer | Networx® |
| Product Dimensions | 3.56 x 3.25 x 0.78 inches |

## Product Details

- **Brand:** Networx®
- **Color:** Blue
- **Compatible Devices:** Router, Switch, Hub, Computer, Server, Modem
- **Connector Type:** RJ45
- **Item dimensions L x W x H:** 3.56 x 3.25 x 0.78 inches

## Images

![Networx® ISDN (PRI) RJ45 Loopback Tester - Image 1](https://m.media-amazon.com/images/I/61hPYy7YXsL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Simple and good insurance all will work fine. Good craftsmanship.
*by S***P on March 8, 2025*

worked flawlessly. I was instructed to build a cord, but didn't want to take a chance. This was cheap insurance it was done right. Keep one in your arsenal.

### ⭐⭐⭐⭐⭐ So easy and convenient to install.
*by T***N on November 16, 2025*

So easy and convenient to install.

### ⭐⭐⭐⭐⭐ IMPORTANT TOOL for every network engineer.
*by J***) on January 17, 2024*

It's basic, but it's necessary, and it works VERY well. Can't tell what switchport a wall port goes to? Throw on loopback detection on every port, plug this thing in, BOOM! Port identified! WAY easier than toning out cables!

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**Shop now:** [https://www.desertcart.ec/products/46937827-networx-isdn-pri-rj45-loopback-tester](https://www.desertcart.ec/products/46937827-networx-isdn-pri-rj45-loopback-tester)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-01-25*