iMBAPrice - RJ45 Network Cable Tester for Lan Phone RJ45/RJ11/RJ12/CAT5/CAT6/CAT7 UTP Wire Test Tool

You can't beat it for around the house. It does everything I need. A very handy tool to keep around especially if you have a really long run of cable on your property.

I'm an IT guy, and I've had Network Cable Testers before, but this unit is small, compact and you can disconnect that small side part to test a cable where one end is on one room and the other end may be way down the hall or another room or whatever. Very basic - does not do any fancy speed testing or connectivity - just shows that they're properly terminated. GREAT price!

Well worth the cost to verify your cables work. They seem cheaply made, but they work really well and helped us find a couple cables that had bad connections. We had a couple cat-5 cables where the crimp nicked a nearby wire and it was easy to spot and fix with these.

work just like it should

I bought this thing years ago and came back to find the link to recommend to a friend. It's cheap, made of plastic, but is one the most useful tools for tracking down where a cat cable gooes through a building, or testing the cables I make to be sure I didn't make a mistake. Great tool!

Had a faulty security camera and wanted to test a Cat6 cable to make sure it wasn’t the cable before I changed the camera. Operation is simple, just plug the Ethernet cable into the reader, hit on, and if functioning it’ll go through each pair (1-8) and light up green along the way. The separate little “remote” piece is for you to plug both ends of a finished cable to make sure it’s crimped correctly. It does the job and is way cheaper than the alternatives.

As advertised. Simple to use. Works well.

Quick SummaryIt seems that there is a reasonable chance of getting a unit that doesn't work and if you do, the seller isn't good about returns and you'll have to engage with Amazon directly.My ExperienceTester showed problems with lights #4 (main box LED lights up, remote box LED doesn't light) & #5 (neither box lights up). This was a working cable that I had made, so I tried another cable - same result. I tested a total of 6 of my hand-made cables, all known to work, with the same result on lights #4 & #5. Then I switched to testing manufactured cables, also all known to work, and got the same exact results with lights #4 & #5. I don't know if it's the internal circuitry that is problematic or the LED lights on the tester that are defective.In either case, it said Free Returns, so I opted to get an advance replacement with a return of the broken tester. Sounded good, but when I went to print the return label (see picture), it said that I had to pay the return shipping costs. That's ridiculous. So, I called Amazon, they promptly refunded the purchase price and automatically canceled the advance replacement.As Others Have MentionedThe instructions are useless, entertaining to try and figure out what they're trying to say in a few places perhaps, but useless as instructions. However, it's simple enough to use, plug one end of cable into main box and the other into the remote box and then turn the switch to "On" for a fast run through the lights or "S" for a slow run through the lights. You want to see simultaneous green lights on both main and remote boxes for each connector (lights 1 --> lights 8), which means that both the main and remote boxes need to be side by side (or at least close together) so you can see whether or not you get simultaneous green lights.