RJ Adapters, Couplers & Extensions

RJ (registered jack) adapters are devices used to convert registered jack connections from one type to another. RJ25 connectors are a standardised connection used in telecommunications applications.

What are RJ adapters used for?

RJ adapters can cover a range of purposes, depending on what type of adapter they are.

  • Couplers join two different connectors together, using two input ports
  • Extensions increase the range of transmission by adding to the length of cable
  • Adapters proper allow different connections to be joined, such as an M12 cable joining to an RJ45 connection

Types of RJ adapters

RJ adapters mainly differ in how many ports they have. They may have between one and six ports, allowing them to connect up to six cables. They can also differ in their wiring configuration, and indeed there are many different types of adapters, from feedthrough connectors to junction boxes to couplers, depending on what you need to convert between. They can be shielded or unshielded.


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Description Price Type Interface Type LAN Category Number of Ports Shield Type Wiring Configuration Length Width Depth Diameter Extension Length Series Series Number
RS Stock No. 765-9965
Mfr. Part No.PXM6033TP
BrandBulgin
$51.20
Each
units
Coupler RJ45 Male Cat5e - STP - 42.2mm - - 32mm - Buccaneer -
New
RS Stock No. 193-0314
Mfr. Part No.RJ45COUPLER
BrandStartech
$2.43
Each
units
Inline Coupler - Cat5e - - - - - - - - - -
RS Stock No. 176-6275
Mfr. Part No.PX0777/CAT6ASTP
BrandBulgin
$27.01
Each
units
In-Line Cable Joiner RJ45 Cat6a - STP Straight Through 105mm - - 38.1mm - PX0777 -
New
RS Stock No. 193-0316
Mfr. Part No.RJ45COUP10PK
BrandStartech
$29.97
Each
units
Inline Coupler - Cat5e - - - - - - - - - -
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