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CAT5E Inline Coupler Extension

UL ListedETL ListedRoHS Compliant

For a more complete list of compatibility with the CAT5E Inline Coupler Extension, click on the Additional Information tab.



Our CAT5E Slim Inline Coupler Extension are engineered with PCB technology, phosphor bronze IDC contacts, gold plated prongs, and a fire-retardant plastic housing. The CAT5E Slim Coupler line is engineered to simplify the connection helping you save time and money. Simply plug in your patch cables and/or RJ45 terminated CAT5E cables and your done.

Because we take great pride in our quality control procedures and our commitment to quality our CAT5E Slim Inline Coupler Extension is subject to UL standards and is UL Listed. Our CAT5E Slim Coupler also meet all requirements for EIA/TIA and also inspected and tested to comply with stringent transmissions and safety standards.

To complete your CAT5E network we carry a full end to end solution including CAT5E bulk Ethernet cables, CAT5E patch cables, CAT5E RJ45 modular plugs, CAT5E keystone jacks, network racks and enclosures, Ethernet switches and wall plates. We also have a large assortment of tools, testers and cable management accessories that will help make your installation fast, smooth and organized. If you have any questions, feel free to give us a call.



  • CAT5E Performance Speeds Of Up To 350 MHz
  • Meets & Exceeds Industry Standards
  • For Use With CAT5E Ethernet Cables/Patch Cords
  • One RJ45 Female To One RJ45 Female
  • Designed For Computer Networking Applications
  • Meticulously Engineered To Deliver Exceptional Performance
  • High Quality Connection And Reliable Performance
  • Small Form-Factor
  • Gold Plated Over Nickel Contacts For Signal Clarity
  • UL Listed


  • Voice
  • 10BaseT
  • 1000Base-T, VOIP
  • 4 Mbps Token Ring
  • 10 Mbps Ethernet
  • 155 Mbps ATM
  • ISDN



Coupler Housing: ABS high-impact UL 94V-0 thermoplastic
Spring Wire: Phosphor Bronze 5210R temper wire, T=0.3mm, 50u "Gold over 100u" Nickel undercoat
Contact Holder: PBT high-impact UL 94V-0 thermoplastic
Height: 0.64 inches
Width: 0.56 inches
Depth: 1.17 inches

Physical Characteristics

Insertion Life: 750 Mating Cycles with FCC Compliant RJ-45 Plug
Contact Force: 100 Grams with FCC Compliant RJ45 Plug
Plug Retention Force: 11 LBF Min
Operating temperature: -10ºC to 60ºC / 14ºF to 140ºF
Storage Temperature Range: -40ºC to 68ºC / -40ºF to 154ºF
Humidity: 10% ~ 90% RH


Insulation Resistance: 500 MΩ
Dielectric Withstanding Voltage: 1000 V
DC Current Rating: 1.5 Amps
DC Resistance: 0.1Ω
Contact Resistance: 20mΩ

Additional Information

Additional Information

Our CAT5E Keystone Couplers are compatible with:

What's in the box?

What's in the box?

  • Qty 1 - CAT5E Female RJ45 to Female RJ45 Slim Type Inline Coupler Extension