NOYAFA NF‑8209S Network Cable Tester – Upgrade Ethernet Cable Tester with PoE Detection, NCV Voltage Test, Cable Length Measurement, Port Flashing & Anti-Interference Scan Modes

i can say that this little tester is a great tool for the price, so many features in a cheap and practical usb - charging tool

I am a network operator, not a electrician, so this tester doesn't get used on the day to day. My first RJ cable tester was: https://www.amazon.com/gp/product/B01M63EMBQ/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1 Works great for testing a crimping here and there, but very primitive. I needed an upgrade. I've come onto job sites where someone else has run the RJ45 and nothing is labeled. I'm standing in front of a 24/48 port switch (nothing in the port description) and users are having connectivity issues: the 'wand' in this Kit is extremely useful. Once I've track down the local and distant ends, a quick 'pin-out' check (a diagram on screen that shows any 'shorts' or 'crosses' that's stopped me from tampering with someone's laptop >ipconfig /flushdns/renew/release) and I've eliminated one more point of failure. Haven't utilized the PowerOverEthernet or Length features. I've tested them, but not able to put the information (power output) to use as I wont be familiar with the end device and it's power requirements. That's troubleshooting configuration setting, not cable integrity. There are higher end testers that can conduct speed and ping tests on a port (you'll need the port config's and again: that's beyond cable integrity), or tell you what type of device is on the distant end. If you really need to dig that deep, you should have remote access to the switch, router, hub, bridge...etc, and see at the exact setting the cable was dedicated for, and not through some scanner. You should also have some understanding of the network design. Unless the contractor who laid the cabling had no consistency when dedicating jacket colors to end devices. For example: blue cable jackets will always go to workstations, white cable jackets will always go to Hot Spots, black - cameras, grey - VoIP phones... These higher end testers can come with a lot of fancy features, but rarely will they be of use. For troubleshooting layer 1 issues, this kit has everything you'll need. Even if a cable is 100%, being able to isolate what port it is plugged into on a switch lunges you into the next step of troubleshooting. Countless times: it was either a wrong port, or a port configuration. With the wand, I moved along in the elimination process SOO much faster.

So far so good. It does exactly what I need it to do and does it relatively well. It does have a very cheap plastic feel, so I’m not sure of it’s durability. Probably will not survive too many drops to the floor.

So I can't say enough about this little, capable, affordable piece of kit. I do my own cabling for my network. I largely live in Cat 5e. I had an old led type tester that would only show me whether I had a fundamental connectivity problem. That was great for awhile. But recently I moved over to doing pass-through connectors. I noticed on my network switch that my connection speed for a new cable was only 100Mbps though it should have been 1000Mbps. My old tester showed everything was fine, but it obviously wasn't. So I splurged the $50 for this little tester. I confirmed that my crimps were bad due to a faulty crimper. I now speed test all of my new cables with this tester by connecting the tester to one end of the cable and the other end to a spare gigabit switch I have. I liked that it did continuity, length testing and toning. A nice feature is that you can get a reading of the wire speed when you use the toning/flash option. The flash option was great as I wanted to map out my network. I connected to each ethernet jack, connected the tester via a short cable and went into flash mode. I then went to my switch where I could see the light pulsing slowly (differently than regular flashing.) I then noted which switch port that particular jack was connected to. I found that it tones wires fine too. I do run POE+ devices too. So I'll check that out eventually. Anyway. I like it. It wasn't that expensive and did more than I needed it to do. Hoped this helps.

Everything works great and is fairly easy to use though the manual sucks. Not sure why I need to switch ports to do the separate functions. Likely to avoid getting sued. Any who. Found it to be accurate and the display sufficient and the features were great for what I'm using it for

This is a good, inexpensive cable tester. It allows toning for signal strength to try to locate pairs or cables and then allows for a continuity check. Its 2 faults for my use is 1) line toning definition is not nearly as good as my more expensive Fluke 200 set and 2) there is no charge indicator except dead device. The latter issue is somewhat mitigated by USB C charging.

Ordered this to check the PoE voltage on my Starlink system. I've got a 225ft CAT6 run and am using a DIY PoE setup. Needed to make sure that enough voltage was getting to the other end of the cable, but this tester shows the same 56v at both ends of the run. It constantly switches between showing non-standard, 802.3af, and different powered pairs. Starlink uses non-standard PoE and there's no way that there's no voltage drop. It works well for basic (short-range) PoE testing. I've barely used the other functions. Almost returned it but it's cheap and still useful enough to be worth keeping. All in all, I wouldn't suggest that you rely on this for anything more than basic home/hobby use. Oh, and it didn't come with batteries even though the box says it does.

As someone who went from working behind a desk as a network engineer to pulling cable several times per month as a contractor, this little kit has been fantastic. All features that I have used (toner, cable tester, port flasher, port tester, port flasher) work well, and seem to be accurate. My biggest issue I run into is battery life, and the case it came with. It will eat through good batteries (Energizer, Duracell) pretty quickly, and the soft case allows the toner and tester to be powered on if you’re not careful about how you place them in soft bags (ie. backpacks). I strongly recommend investing in rechargeable batteries and purchasing a hard case. Build quality and button quality are a little questionable. Everything is made from fairly cheap plastic, and the buttons feel like they would be easy to press too hard and break something inside the unit. Overall, I think this thing is a very useful little tester for someone who isn’t worried about reliability, or who can at least be very certain they can keep it from getting crushed. I will be upgrading to a name-brand unit soon (ie. Klein), but I definitely do not regret buying this.

Lätt att använda

Prima tester. Geeft direct resultaat van de connectie. Ook de lengte is een goede indicatie of de gemaakte verbinding gelukt is.

Seems pretty good for the money. I wished that I had skipped cheap and basic cable testers. I had a break in a 50m cable run and wanted length testing - which worked surprisingly well on this tester. It did over state the total cable length a little but it did help me find the damage. Note that only one end of the cable needs to be plugged in to the tester and the other end left unplugged. I have seen a one review that suggested both ends of the cable need to plugged into the tester, which is not the case.

As I'm not the best installer, I had 3 cables that I'd run through my walls work poorly or not at all. I was using shielded cable (in my amateur radio station, where there's lots of electromagnetic energy present) and I was happy to see that it tested the ground connection as well as the 8 conductors. The continuity test is most useful, where you plug the supplied passive device into the far end and it tells you which wires failed, or were wired incorrectly, or if the ground is not conducting. The TDR function which measures cable length can sometimes help with identifying which end is in error. I had one connector where the wires weren't pushed in all the way and the TDR said this was an open circuit while the other end it was the expected cable length. Another cable that must have had marginal contacts showed the correct lengths at one end, and several different lengths at the other. Replacing the latter connector was the correct choice. I had one socket that had the middle (blue) pair reversed. The continuity test found that straight away, and after inspecting the plug at the opposite end and seeing it was correct, opened up the wall panel and corrected it. There is also a function to identify cables using a (powered) wand which emits an audio tone when near the cable that the main unit is plugged in to. This is another handy feature for narrowing down problems, although for shielded cable you need to have the wand near the connector rather than anywhere along the cable. All in all I fixed everything in a single afternoon, after having them in an unusable state for over a year. So it was money well spent. The unit comes with a little carrying case, and some short cables for testing RJ45, RJ11 and bare wires using alligator clips, and batteries for the two units that need them. The manual is clear enough, although does suffer from somewhat poor use of English. I'm very glad I bought this unit and it works as advertised.

Useful tester with included cables a bonus Used for both testing cable and searching for cables