Ethernet Couplers

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 Voltage Rating
RS Stock No. 768-4438
Mfr. Part No.EHFF2
HK$82.73
Each
units
Adapter F Connector/F Connector - - - - 26mm 31mm 21.5mm - - - - -
RS Stock No. 695-0210
Mfr. Part No.RJ11F21G
BrandAmphenol
HK$610.01
Each
units
Adapter RJ11 Female - 6 UTP Straight Through 39.7mm 28.6mm 28.6mm - - RJ11Field RJ11F21G -
RS Stock No. 802-7772
Mfr. Part No.1689268
HK$450.11
Each
units
- RJ45 - - - - - - - - - VS-08-KU-IP67 - -
New
RS Stock No. 203-5599
BrandRS PRO
HK$75.96
Each
units
Feedthrough Connector RJ45 Cat6 1 - - - - - - - - - -
RS Stock No. 782-5862
Mfr. Part No.2111121-1
BrandCOMMSCOPE
HK$100.49
Each
units
RJ45 Coupler - Cat5e 2 Unshielded Straight Through 29.95mm 14.48mm 20.62mm - - - - -
RS Stock No. 878-2448
Mfr. Part No.J60029A0000
HK$552.88
Each
units
Coupler RJ45 Cat6 1 Shielded Straight Through 37mm 37mm 45mm - - TOC - -
RS Stock No. 878-2432
Mfr. Part No.J60020A0002
HK$609.31
Each
units
Coupler RJ45 Cat6 1 Shielded Straight Through 38mm 38mm 44.8mm - - TOC - -
RS Stock No. 498-2962
Mfr. Part No.09458451500
BrandHARTING
HK$645.63
Each
units
RJ Industrial Outlet Push Pull - - - - - 173mm 69mm 90mm - - RJ Industrial - -
RS Stock No. 333-6611
Mfr. Part No.DPM8812
HK$244.02
Each
units
Splitter RJ45 Female, RJ45 Male Cat5e 3 - - 14mm 37mm 48mm - - - - -
RS Stock No. 194-6796
Mfr. Part No.21.17.3065-20
BrandRoline
HK$49.97
Each
units
Junction Box - Cat6 - STP Straight 26mm 32mm 60mm - - - 21.17.3065 -
RS Stock No. 208-1742
Mfr. Part No.A 42-A0020
HK$122.41
Each
units
Adapter RJ45 Female, RJ45 Male Cat5 - - - - - - - - - - -
RS Stock No. 885-7668
Mfr. Part No.32-2058K
HK$13.644
Each (In a Pack of 10)
units
RJ-31X Surface Jack Adapter RJ31X Female - 1 - Straight Through - - - - - - 32 -
RS Stock No. 208-1792
Mfr. Part No.1 12.114
BrandMolex
HK$60.57
Each
units
Extender RJ45 - - - - - - - - 150 mm - - -
RS Stock No. 111-6746
BrandRS PRO
HK$141.49
Each
units
Coupler RJ45 Female - 1 Shielded Straight Through - 29.1mm 38.2mm - - GTC Sealed GTC Sealed -
RS Stock No. 364-4316
Mfr. Part No.SPE190688
HK$258.97
Each
units
Splitter RJ45 - 4 - - 26mm 55mm 62mm - - - - -
RS Stock No. 874-1263
BrandRS PRO
HK$33.36
Each
units
- - - - - - - - - - - - - -
RS Stock No. 623-6160
Mfr. Part No.09458151100
BrandHARTING
HK$1,437.56
Each
units
Industrial Outlet - Cat5 - - - 105mm 105mm 40.5mm - - RJ Industrial - -
RS Stock No. 768-5544
Mfr. Part No.IE-BSS-V14M-RJ45-FJ- -1085260000
BrandWeidmuller
HK$253.11
Each
units
Coupler RJ45/IDC Cat6a - - - - - - - - - - -
RS Stock No. 875-5644
Mfr. Part No.20822040001
BrandHARTING
HK$293.22
Each
units
Plug RJ45 Cat6a - STP - 22mm 26.2mm 69mm - - Ha-VIS preLink 2082204 -
New
RS Stock No. 203-5615
BrandRS PRO
HK$42.90
Each (In a Bag of 2)
units
- - - - - - - - - - - - - -
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