DataShark Network Cable Tester - Cable Mapper, Check Continuity - Test Patch Cords or Installed Cable Runs

This tester works great for the money. I tried to test my Cat 5e runs with a laptop and my router, but I had enough issues with the connectors that I needed one of these to figure out what I had done wrong. I had a couple of connectors that I cut the wires too short to get a connection and a couple where I did not get the wires inserted in the right order. You really dont need more than this to verify data runs. Save the money versus the more expensive testers and use a multimeter to test your Coax runs. You can test Coax by checking continuity (or resistance) for a open circuit between the center wire and the outer wire on one end. Then short the other end (an alligator clip works) and test for continuity. You dont need any special adaptors to test coax with a multimeter.

Works great and faster for trouble shooting

The case could be better. It does not hold the test unit and small test link jumpers. The unit runs through a test light sequence, each corresponding to a wire checked. Once you know the sequence you can see if a light is not energized, equating to an issue in the cable. For a basic and inexpensive tool it does well.

Just what I needed!

Great

Bought one of these at Home Depot. It was DOA -- didnt function at all (aside from the power light).

After 4 months of use the lights have started to fail. I would not buy this product again. I would have thought with a name like greenlee it would have been of better quality.

Works just like it says. Was able to test the lines as I was installing them and everything worked perfect once the computer and set top box were connected.

Inexpensive, but fabulous for tracing a maze of undocumented cables. You also need walkie-talkies or cell phones.

If you need a cable tester pin for pin, this is what you are looking for.