Copper Loop back plugs

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Copper Loop back plugs
Copper loopback plugs are connectors used for diagnosing transmission problems. It plugs into a port, such as a serial or parallel port, and crosses over the transmit line to the receive line so that outgoing signals can be redirected back into the computer for testing. Available T1 & E1 RJ48c loopback and Ethernet Loopback.
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  1. loop back RJ45 for E1/T1 Blue
    loop back RJ45 for E1/T1 Blue
    £2.40
    loop back RJ45 for E1/T1 Blue. Pin 1 will loop back on Pin 4 & Pin 2 will loop back on pin 5. Learn More
  2. loop back RJ45 for Ethernet Yellow
    loop back RJ45 for Ethernet Yellow
    £2.40
    loop back RJ45 for Ethernet Yellow. Pin 1 will loop back on Pin 3 & Pin 2 will loop back on pin 6. Learn More
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