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

Does exactly what it says it will do.

Cheap, reliable, does the job, what else can you ask for?

Only thing missing is a brief how to

Just what I needed to test DYI built cable.

I purchased this to test new network cables I was installing with new RJ45 plugs on each end. The tester worked well and clearly identified whether the cables and connections were good and where I had problems. I had one connector where one of the wires had broke, probably when stripping the insulation from the outer cable. The tester quickly identified the problem and I was able to quickly correct the problem. The tester worked great and seems to be made well. I would recommend this for anyone installing network cables.

Straight forward to use, checks for all mistakes. Found my green and white wire vs blue and white wire first-try mistake, streaming upstairs now activated, fine product

Its simple and works really well. Tells you which lines are not terminated properly. Great product especially for the price.

I had a problem with my printer intermitantly disappearing off my home network. Having exhausted the possible software causes I began to suspect a hardware problem, and bought this tester, based largely on other buyers reviews of it and of similar products. I chose this particular one because the price was reasonable and the other reviews did not critisize it for being overly cheap. Since my problem was intermitant, it took me a couple of tries to catch the fault in the act. I started by putting the main unit on the end of the patch cord that plugs into the printer and the satellite unit on the end of the other patch cord that plugs into the switch. The first time I tried it tested OK, but when I took it out and reconnected the printer, it was working again. The next time the printer disappeared I tried again, and found an open connection on pin one. I have a relatiley complicated system, with inline surge supressors on both ends of the run through the walls, so I tested each individual patch cord and component working back from the switch to the printer one connection at a time, and eventually found the guilty party. It was a commercially obtained patch cord that worked intermitantly when you wiggled one end around. Being commercially made it is probably about the last thing I would have suspected without the tester. Had I known they were this inexpensive I would have bought one years ago. Since I dont know when I might use it next I took the batttery out of it before I stored it away.

Crimped a bunch of Ethernet cables and had a bad one. Easy to figure out. Plug and play.

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