does this work with telephone line?

Yes, the RJ45 coupler works with telephone line but you need to use Cat7, Cat6, or Cat5e to get the speed effect. Hope this helps

Are these couplers capable of 10gbps or 1gbps? The description says 10gbps but the specification says 1gbps.

Hi friend, The RJ45 coupler Ethernet extender supports 1Gbps at max. Hope it helps.

can i connect 4 150ft ethernet cords to them?

Yes and No. The maximum allowed length for ethernet is 328 ft, but you can use an ethernet switch to extend another 328 ft. So, you can actually go the desired length (600 ft) by connecting as follows - 150' cable, coupling, 150' cable, switch, 150' cable, coupling, 150' cable. Here's a typical 5 port switch - NETGEAR ProSAFE 5-Port Gigabit Ethernet Switch (GS105 v5) ~$30

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RJ45 Coupler Ethernet Extender Connector 5 Pack Inline Coupler Cat7 Cat6 Cat5e Ethernet Cable Adapter Female to Female Black

Product ID: 29832977

Details

Color
Black
Compatible Devices
Computer
Connector Type
RJ45
Item dimensions L x W x H
1 x 7.3 x 5.1
Specific Uses For Product
Laptop Switch

⚡1 Gbps speed

🔗Secure, no signal loss

🖧Cat5e to Cat7 compatible

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€ 26.32

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Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔌 Plug into seamless speed and never miss a byte!

ZERO SIGNAL DEGRADATION - Nickel-plated contacts and precision alignment ensure your data flows flawlessly—no lag, no interruptions.
COMPACT DISCREET DESIGN - Palm-sized and sleek, it fits anywhere—ideal for tight spaces and clean cable management.
RELIABLE 5 PACK CONVENIENCE - Stock up and stay connected with five durable couplers, ready to extend your network wherever needed.
SEAMLESS GIGABIT CONNECTIVITY - Experience blazing 1 Gbps speeds without compromise, perfect for your high-demand home or office network.
UNIVERSAL ETHERNET COMPATIBILITY - Works effortlessly with Cat5, Cat5e, Cat6, and Cat7 cables, future-proofing your network setup.

The UGREEN RJ45 Coupler 5-Pack is a compact, high-performance Ethernet extender compatible with Cat5 through Cat7 cables. Designed for zero signal loss with nickel-plated contacts, it supports up to 1 Gbps speeds, ensuring reliable, lag-free network extension for professional and home environments alike.

Specifications

ASIN	B016B13U5S
Best Sellers Rank	#554 in Cat 6 Ethernet Cables
Brand	UGREEN
Color	Black
Compatible Devices	Computer, Router, Switch, Network Device
Connector Type	RJ45
Current Rating	0.5 Amps
Customer Reviews	4.7 4.7 out of 5 stars (4,931)
External Testing Certification	Não aplicável
Finish	Glossy
Item Dimensions	1 x 7.3 x 5.1 inches
Item Type Name	Ethernet
Item Weight	0.11 Kilograms
Manufacturer	UGREEN GROUP LIMITED
Mfr Part Number	2724595936114
Model Number	20390P5
Number of Items	5
Number of Ports	1
Package Quantity	1
Power Plug Type	No Plug
Smart Home Compatibility	Not Smart Home Compatible
Specific Uses For Product	Laptop, Nintendo Switch, Television, Personal Computer, Router, Printer
Unit Count	5.0 Count

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€ 26.32

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Austria.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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