







📞 Connect flawlessly, extend effortlessly – never miss a call again!
The SinLoon RJ11 Coupler is a compact, high-quality inline adapter designed to join two RJ11 telephone cables seamlessly. Featuring a durable, heat-resistant PCB and gold-plated contacts, it guarantees stable, interference-free signal transmission with no loss. Compatible with all RJ11 devices, this coupler is perfect for extending landline, fax, or answering machine connections in home or office environments.






| ASIN | B08ZCGY32S |
| Best Sellers Rank | #201 in Telephone Wires |
| Customer Reviews | 4.4 4.4 out of 5 stars (85) |
| Date First Available | March 18, 2021 |
| Item Weight | 1.44 ounces |
| Item model number | SL-RJ11-CF |
| Manufacturer | mandyyan |
| Package Dimensions | 5.91 x 3.07 x 0.83 inches |
A**S
Works well
Just what I needed, built solid.
J**E
Well Built Coupler
I purchased this RJ12 Coupler to extend a short data cable and it worked as expected. It feels very well built and will purchase a couple more.
W**L
Works Well
Product works as described, have not had any issues
B**R
Needed a specific type of splice
I have a small blackstar desktop practice amp and there is a companion second speaker. Unfortunately, the practice amp has its speaker wire hard wired and is a specific length. I wanted a bit more space between the amp speaker and the extension speaker so I needed a splice block and more cable. This was the correct splice for the speaker cable.
P**N
Works good
Looks like good quality. Used on ham radio seperation cable
P**K
They work well
A nice tight fit and connection, thanks.
K**N
Great extender when you need a longer cable.
used to couple 2 shorter cables together.
P**K
Works as expected
A little large but works just fine.
G**T
Fonctionne très bien
L**.
Great for keeping free from tangling
N**N
Would by again. Works as intended.
B**N
Solidly built but did not work.
Trustpilot
3 weeks ago
1 month ago