Serial Cable Tester

Rated 5.00 out of 5 based on 1 customer rating
(1 customer review)


The serial cable tester is an extremely simple yet essential device to quickly check a serial cable for its type and continuity. Simply plug one side of the serial cable to a Side A connector (either male or female) and attach the other side of the cable to a connector on Side B. Use the selection switch to choose between cable type or line continuity test.

In stock

SKU: 200021 Category:

Serial Cable Tester


  • Immediate visual indication of line continuity or straightthru / null modem cable configuration
  • Male and female terminations on both sides allow fast, nohassle gender-independent usage
  • 9 green indicator LEDs to immediately show continuity of each cable line without any probing
  • One blue (straightthru) and one yellow (null modem) LED to indicate cable type
  • Extremely simple operation
  • Very low power requirements: battery will virtually last forever with proper use (but is also replaceable)


  • Testing continuity of 9line serial cables
  • Verifying the cable type (null modem vs. straightthru)
  • Essential tool for engineers, technicians and production staff to insure cable integrity and eliminate errors

Additional Information

Additional information

Weight .5 lbs
Dimensions 7 x 5 x 2 in

1 review for Serial Cable Tester

  1. Rated 5 out of 5


    I can’t count the number of times this little device has saved me! One doesn’t often think that a simple serial cable wouldn’t “just work” but internal wires break. Just today I wanted to check if an old cable was NULL or not and for kicks did the continuity check. Sure enough it found two flakey lines at one of the connectors, which would have caused a lot of grief. Every developer needs one of these!!!

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