Features of the AudioJog Pro 8 Cat 5e cable tester:
There are 2 rows of 9 LED's corresponding to each of the possible connector pins of the AudioJog Pro 8 – Cat 5e Network Cable Testers and one for the screen (or ground) connection. As each pin is activated, the LED's indicate all connections associated with that pin, so that short, open and crossed circuits can be easily found. The LED's also show the possibility of high resistance or leakage connections. 2 LED's indicate a good digital network connection, either Straight through, or Crossed over.

Memory option
There are 4 LED's indicating the state of the MEMORY option.
If the MEMORY LED is on, then AudioJoG Pro 8 automatically scans all the connections
    and compares against information held with just one press of the test button.
MEMORY works in both test modes.

Test modes for AudioJog Pro 8 Cat 5e Cable Testers:
Double ended - both ends of the cable under test are plugged into AudioJoG Pro 8.
Single ended - one end of the network cable under test is plugged into AudioJoG Pro 8 the
    other into another AudioJoG Pro 8.

Specification Double {Single} Ended:
Continuity and Short Circuits, less than 255K {75K} ohms
Open Circuits (end to end and between connected pins), greater than 255K {75K} ohms.
Less than 2 {5} second test time
L 203mm W 150mm D 50mm
Uses 9v PP3 battery (not supplied) Continuity and Short Circuits, less than 255K {75K} ohms.

Interested? Have a look at the CableJog website.