--- product_id: 378141472 title: "RFAdapter 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: "87.83 DT" currency: TND in_stock: true reviews_count: 5 category: "Rf Adapter" url: https://www.desertcart.tn/products/378141472-rfadapter-rj11-coupler-2-pack-telephone-phone-line-connector-coupler store_origin: TN region: Tunisia --- # Low Signal Attenuation 6P4C Pin Configuration RJ11 Female-to-Female Connector RFAdapter 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:** 87.83 DT **Availability:** ✅ In Stock ## Summary > 📞 Connect smarter, sound clearer — never miss a call again! ## Quick Answers - **What is this?** RFAdapter 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?** 87.83 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/378141472-rfadapter-rj11-coupler-2-pack-telephone-phone-line-connector-coupler) ## 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 - • **Crystal Clear Audio:** Experience high-fidelity sound with strong anti-interference for flawless calls every time. - • **Seamless Line Extension:** Effortlessly connect and extend your telephone lines without signal loss or distortion. - • **Universal Compatibility:** Works flawlessly with all RJ11 devices—landlines, fax machines, and answering systems. - • **Compact & Durable Design:** Space-saving, sturdy build fits discreetly in any home or office setup. - • **Hassle-Free Installation & Support:** Plug-and-play setup backed by a 12-month worry-free warranty and responsive customer service. ## Overview The RFAdapter RJ11 Coupler 2-Pack offers a compact, durable solution to extend telephone lines with female-to-female RJ11 connectors. Featuring 6P4C pins and low signal attenuation, it ensures crystal-clear, interference-free audio. Compatible with all RJ11 devices, this easy-to-install coupler is perfect for home or office use, backed by a 12-month warranty and excellent customer support. ## 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: It works great - Did not have 1 long enough cord to connect phone/fax machine to phone jack but this coupler did great job of connecting the two cords. Review: ELOGIO - Ótimo. Atendeu às minhas necessidades. Recomendo. ## 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 | #57,625 in Electronics ( See Top 100 in Electronics ) #84 in Telephone Cables | | Brand | RFAdapter | | Brand Name | RFAdapter | | Cable Type | Telephone | | Cable type | Telephone | | Color | White | | Compatible Devices | Telephone | | Compatible Phone Models | All Smartphone | | Compatible devices | Telephone | | Compatible phone models | All Smartphone | | Connectivity Technology | RJ11 | | Connector Gender | Female-to-Female | | Connector Type | RJ11 | | Connector type | RJ11 | | Customer Package Type | FFP | | Customer Reviews | 4.6 out of 5 stars 656 Reviews | | Ethernet Cable Category | Cat 5 | | Indoor Outdoor Usage | Indoor | | Item Shape | Round | | Manufacturer | RFAdapter | | Model | RFAdapter Telephone Wires | | Number of Items | 2 | | Number of Pins | 6 | | Other Special Features of the Product | Compact | | Part Number | ULRF0A0135A-2-CA | | Recommended Uses For Product | telephone line extension or combination | | Special features | Compact | | UPC | 744306795542 | | Unit Count | 2 Count | ## Product Details - **Brand:** RFAdapter - **Cable type:** Telephone - **Compatible devices:** Telephone - **Connector type:** RJ11 - **Special features:** Compact ## Images ![RFAdapter 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) ## 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 ### ⭐⭐⭐⭐⭐ It works great *by R***G on 12 June 2025* Did not have 1 long enough cord to connect phone/fax machine to phone jack but this coupler did great job of connecting the two cords. ### ⭐⭐⭐⭐⭐ ELOGIO *by S***A on 28 March 2025* Ótimo. Atendeu às minhas necessidades. Recomendo. ### ⭐⭐⭐⭐ Satisfecho! *by A***Z on 30 January 2026* Buen producto ## 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 --- ## 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.tn/products/378141472-rfadapter-rj11-coupler-2-pack-telephone-phone-line-connector-coupler](https://www.desertcart.tn/products/378141472-rfadapter-rj11-coupler-2-pack-telephone-phone-line-connector-coupler) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-08*