NOYAFA NF-488 POE Cable Tester for Power Over Ethernet, Network Cable Continuity Checking, Switch Loop-Back POE Detector

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.

I've had good luck with this so far and I'm pleased with the very fair price. I consider the USB-C charging (for *both* Tx and Rx units) well worth the small upgrade cost from the next model down in their line. Mine did arrive with the receiver (Rx) unit turned on and its battery stone-cold dead. But once charged, everything works as advertised.The controls are simple and intuitive and the display backlight very helpful. In my experience, tools like this typically get used in poorly lit, overcrowded closets.I can't attest to the precision of the distance test, but I know it's reasonably close at my backbone length of around 75 ft (~23m). Even a +/- 5% is very useful for troubleshooting in my setting.One word of advice: They provide a USB-C cable but you're supplying your own charger. I was unable to charge using a 'smart' charger (e.g., Anker IQ). Apparently it only wants an older-style 5V supply.In general, this is something to be aware of with a many devices on the market. I made the mistake of recharging a dive computer with the included cable connected to my own 9V-capable Samsung charger and melted the plastic housing. Not every mfr. implements the necessary circuitry for the smart chargers to correctly detect and adjust. At least in this case, connecting an inappropriate charger PREVENTED charging which might have caused some damage. As such, this is not a con.Another thing to be aware of is that it's very easy to switch between tests and forget to move your cable. There are different RJ45 jacks for different functions. I'm embarrassed to admit how many times I did this. Slow learner, apparently.

I purchased this unit and have been using it throughout my workday as an AV tech. The POE test, continuity function, and wire length are worth the price alone, but the toner function or 'scan' when using the aligator clips is garbage. The toner / scan function works ok when dealing with only ethernet wiring since it can use all 4 pairs, but using the alligator clips off the RJ11 connector, into a 8 pin jack just doesn't make connection properly. I was unable to identify a single wire with that method. Ethernet like I said works ok, but tone is a little quiet and found that the digital method works the best.That said, I do find the continuity function really nice. The picture I uploaded was during troubleshooting a problematic wi-fi access point. The tester showed me there was a wire problem and exactly what was wrong with the wire. I could see that pairs 4-5 and 7-8 were good and I could make the access point work using those wires until a new wire could be pulled into place. Without the tester I would have to check continuity on each of the 8 wires, taking much more time.Plus I think theoretically I could have use the length function to see exactly how far away the break in the wire was from me, but I didn't try that part.I would actually pair this unit with a separate toner like the inexpensive chinese brand units on here around $25 that come in a blue or orange color, or if you have a larger budget a fluke pro3000 or pro3000f60 toner. That's what I did.

I have been using this at work to tone and track Cat6, with POE..The toner works rather well..I set it to Digital and have found every cable..With Analog toner you pick up a lot of Noise in the cable..With the Digital tone, there is no noise..I have used the POE test, that works..Also the port flashing is a big help..This over all works great for the price...

J’ai peut-être sauvé mes deux caméra poe, des deux d’injecteurs poe dit standard qui ne l’était pas.

Very good product

I started a very small cabling and installation business 2 years ago. This was my starting kit. Even though I dropped and banged the thing several times, it was still in pristine condition. A professional kit would cost 3-6 times the price and not offer much more in return.-The tester (continuity) is flawless (to make sure all 8 strands are correctly crimped), you can even check grounded connectors.-The probe (scan) is also very excellent. Although it could be a little stronger as it might not beep on the wrong side of the cable, si I have to rotate or scan several inches of the cable to confirm I am not probing the correct cable. After 2 years I realized it can even scan for electricity (to know if there an outlet is hot or if the electricity is off (NCV mode).-Length - I have not really used this mode much but it seemed fairly accurate most time. Could be a few feet off but still gives you a good idea.-PoE - Another feature I don't really use.Overall, excellent starter kit from amateur to serious home lab or small networking startups.Also a good compact backup kit to keep close in case you need it.I have upgraded to a serious Klein Tools SCOUT PRO 3 kit with some add-on accessories. But I will always keep this NOYAFA kit close-by.I totally recommend it!Note: Do yourself a favour and buy some rechargeable batteries. You never want to leave Alkaline batteries in expensive tools because they will eventually leak. Rechargeable batteries don't leak and are better for the environment. I bought a kit of EBL 9-volt lithium-ion and AA Duracell NI-MH (green package) batteries also on Amazon. Best money spent!

Funciona perfectamente aun que aun no lo uso en distancias mayores a 10 metros.

I only tested the wireless detection and the blinking port function. It all worked perfectly.