---
product_id: 378141472
title: "RJ11 Coupler, 2 Pack Telephone Phone Line Connector Coupler RJ11 6P4C Inline Keystone Jack Female to Female Straight Telephone Cable Cord Extension White"
brand: "rfadapter"
price: "$U1271"
currency: UYU
in_stock: true
reviews_count: 5
category: "Rf Adapter"
url: https://www.desertcart.uy/products/378141472-rj11-coupler-2-pack-telephone-phone-line-connector-coupler-rj11
store_origin: UY
region: Uruguay
---

# Low signal attenuation Seamless RJ11 connection Strong anti-interference RJ11 Coupler, 2 Pack Telephone Phone Line Connector Coupler RJ11 6P4C Inline Keystone Jack Female to Female Straight Telephone Cable Cord Extension White

**Brand:** rfadapter
**Price:** $U1271
**Availability:** ✅ In Stock

## Summary

> 🔌 Plug into flawless connections—because every call counts!

## Quick Answers

- **What is this?** RJ11 Coupler, 2 Pack Telephone Phone Line Connector Coupler RJ11 6P4C Inline Keystone Jack Female to Female Straight Telephone Cable Cord Extension White by rfadapter
- **How much does it cost?** $U1271 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/378141472-rj11-coupler-2-pack-telephone-phone-line-connector-coupler-rj11)

## Best For

- rfadapter enthusiasts

## Why This Product

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

## Key Features

- • **Space-Smart Design:** Small, sleek, and durable—fits discreetly anywhere without cluttering your workspace.
- • **Crystal Clear Calls:** Experience high-fidelity sound with zero static or distortion—because your conversations deserve clarity.
- • **Reliable & Worry-Free:** Backed by a 12-month warranty and dedicated customer support for total peace of mind.
- • **Universal Compatibility:** Works flawlessly with all RJ11 devices—landlines, fax machines, and answering systems included.
- • **Effortless Line Extension:** Connect and extend your telephone lines in seconds with compact RJ11 couplers.

## Overview

This RJ11 Coupler 2-pack offers a compact, durable solution to extend telephone lines with minimal signal loss and strong anti-interference. Compatible with all RJ11 devices, it ensures crystal-clear voice transmission and easy installation, making it ideal for home and office use. Backed by a 12-month warranty, it guarantees reliable performance and customer satisfaction.

## Description

RJ11 inline coupler is used to connect and extend two existing telephone lines with R11 telephone connector at both ends through telephone through box.Compress all the spare space, accurate signal transmission, small and exquisite, compact and durable. Easy to install and no static or distortion of voices.It has high fidelity sound quality, exquisite workmanship, strong anti-interference ability and low signal attenuationcoefficient. Provides good solid connection without signal loss.Universally compatible with all RJ11 devices such as landline phones, fax or answering machines etc. Wide range of use: family, study, living room, bedroom, office, business meeting, education, entertainment, etc.We offer worry-free warranty and friendly customer service within 12 months for your confident purchase. If you are not satisfied with any product, please don’t hesitate to contact us, we will serve you our best.

Review: Ótimo. Atendeu às minhas necessidades. Recomendo.
Review: Works as advertised and I am using them now.

## Features

- RJ11 inline coupler is used to connect and extend two existing telephone lines with R11 telephone connector at both ends through telephone through box.
- Compress all the spare space, accurate signal transmission, small and exquisite, compact and durable. Easy to install and no static or distortion of voices.
- It has high fidelity sound quality, exquisite workmanship, strong anti-interference ability and low signal attenuationcoefficient. Provides good solid connection without signal loss.
- Universally compatible with all RJ11 devices such as landline phones, fax or answering machines etc. Wide range of use: family, study, living room, bedroom, office, business meeting, education, entertainment, etc.
- We offer worry-free warranty and friendly customer service within 12 months for your confident purchase. If you are not satisfied with any product, please don’t hesitate to contact us, we will serve you our best.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08L67FQ8T |
| Best Sellers Rank | #29,820 in Electronics ( See Top 100 in Electronics ) #44 in Telephone Cables |
| Item model number | RFAdapter Telephone Wires |
| Manufacturer | RFAdapter |
| Package Dimensions | 4.6 x 3.81 x 1.6 cm; 9 g |

## Product Details

- **Brand:** RFAdapter
- **Cable type:** Telephone
- **Compatible devices:** Telephone
- **Connector type:** RJ11
- **Special features:** Compact

## Images

![RJ11 Coupler, 2 Pack Telephone Phone Line Connector Coupler RJ11 6P4C Inline Keystone Jack Female to Female Straight Telephone Cable Cord Extension White - Image 1](https://m.media-amazon.com/images/I/41q8B-I7+rL.jpg)
![RJ11 Coupler, 2 Pack Telephone Phone Line Connector Coupler RJ11 6P4C Inline Keystone Jack Female to Female Straight Telephone Cable Cord Extension White - Image 2](https://m.media-amazon.com/images/I/517awvP8MnL.jpg)
![RJ11 Coupler, 2 Pack Telephone Phone Line Connector Coupler RJ11 6P4C Inline Keystone Jack Female to Female Straight Telephone Cable Cord Extension White - Image 3](https://m.media-amazon.com/images/I/51FdiqkJWlL.jpg)
![RJ11 Coupler, 2 Pack Telephone Phone Line Connector Coupler RJ11 6P4C Inline Keystone Jack Female to Female Straight Telephone Cable Cord Extension White - Image 4](https://m.media-amazon.com/images/I/51OK0+pQsUL.jpg)
![RJ11 Coupler, 2 Pack Telephone Phone Line Connector Coupler RJ11 6P4C Inline Keystone Jack Female to Female Straight Telephone Cable Cord Extension White - Image 5](https://m.media-amazon.com/images/I/51PLzy6kf5L.jpg)

## Questions & Answers

**Q: I tested the polarity and the coupler changes the polarity of the lines compared to when polarity checked at outlet before coupler used. PIN layout?**
A: Yes, many of these couplers are simple, straight thru pin 2-5 to 2-5 and do not properly crossover/reverse the pins to maintain the continuity on the same wires throughout both cables.

If using this type of straight thru coupler, you'll need to either use two of them (plus an extra "bridge" cable) or wire up your own custom crossover cable to correct the pin-out issue.

**Q: Does this work for two-line phones?**
A: If there are two lines connected to the phone that you want to extend with "extension chords" (connect to longer phone lines), you would need on coupler for each line.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by S***A on 28 March 2025*

Ótimo. Atendeu às minhas necessidades. Recomendo.

### ⭐⭐⭐⭐⭐ Review
*by O***R on 1 November 2025*

Works as advertised and I am using them now.

### ⭐⭐⭐⭐⭐ Review
*by B***T on 20 December 2024*

Couldn't find these anywhere else. Perfect for what I needed to extend my phone system. Very Happy.

## Frequently Bought Together

- RJ11 Coupler, 2 Pack Telephone Phone Line Connector Coupler RJ11 6P4C Inline Keystone Jack Female to Female Straight Telephone Cable Cord Extension Adapter White
- Ubramac 15 Feet Long Telephone Extension Cord Phone Cable Line Wire, with Standard RJ11 Plug and 1 in-Line Couplers and 15 Cable Clip Holders-White

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-02-03*