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MarkG
Reviewed in the United States on April 9, 2025
This PoE Detector, Quickly Identify Power Over Ethernet with RJ45, PoE Tester 802.3af/at Passive 24V/48V/56V. OONO F-1075 detects 802.3af/at but not passive 48V Starlink. The connector snaps in well and it is a nice small case. The instructions don't really explain the difference between Mode A and B and what the two LEDs mean.It blinks as it should for 802.3af/at, but there are no lights at all on a Starlink passive injector. I did not have any others to test.
Bruce P.
Reviewed in the United States on April 25, 2025
Nice that it identifies what _kind_ of PoE is there, out of 4 different kinds plus "none". It's small and easily fits your pocket, and convenient to use when mounting cameras, etc.
Jerry
Reviewed in the United States on April 23, 2025
A great way to test if power is being supplied to a non-functional camera. Sometimes it is difficult to determine if the camera is malfunctioning or if there is an issue with the POE. This device allows me to eliminate the POE issue without having to dismount the camera or bringing out a power supply and an extension cord. This makes my life SO much easier when I have camera issues.I am very happy with this POE tester. I give it 5 stars!
Kevin
Reviewed in the United States on April 22, 2025
I had to look up additional information on what exactly the different PoE modes described actually were, so it would have been nice if this came with... any instructions at all. I also thought it was odd that when I connected a passive 12V PoE cable, the 24V led was lit - there's no 12V LED or anything like that on the device. I'm guessing maybe that just means "not 48V or higher" and they assume that you wouldn't be using 12V. Either way, it's a bit confusing, but it does do the job.
CE
Reviewed in the United States on April 18, 2025
I like that this POE tester lets you know if the line is dead or has POE present. No instructions came with it and the label is not very descriptive but I just look at it as a go-no go indication for my POE camera ethernet cables. In my case, a flashing green and flashing red LED was indicated on a working POE camera cable. I feel it is reasonably priced and I'm glad to have it. If you've ever wasted time trying to figure out why a camera isn't working only to find the cable unplugged back at the switch or you botched the RJ45 connector, you'll want this device.
Atom
Reviewed in the United States on April 17, 2025
Having installed many PoE security cameras and network cabling, I recognize that having a handy little detector like this in my tool bag is a big time saver. It’s not very often that I am doing these installations these days, but I like to have “the right tool for the right job” when I need it.I have a couple different ethernet cable testers, but they do not provide info if there is PoE power over the cable. This is where this detector comes in. It fills in that “blind spot” of being able to confirm that proper PoE power is being sent through the cable.This is an inexpensive tool that is great to have for any PoE network cable installation and for effective troubleshooting.
JadedMintChip
Reviewed in the United States on April 14, 2025
I acquired the OONO PoE Detector to validate proper PoE output from my security camera system. There are no instructions included with the product but you can go to their website at czh-labs.com to view a YouTube video of the product in use for various PoE types. There are two modes for PoE. Mode A means positive voltage is on pins 1 and 2, and negative voltage in on pins 3 and 6 while Mode B means positive voltage on pins 4 and 5, and negative voltage in on pins 7 and 8. A solid Green light in either Mode represents Passive PoE at 24V (passive means there is no negotiation for PoE, it is always outputting the voltage). A solid Blue light in either Mode represents Passive 48/56V. A solid Red light indicates reversed voltage (negative on pins 4 and 5 and positive on pins 7 and 8). A flashing green light in either Mode indicates negotiated PoE under the IEEE 802.3af/at standard. What is confusing here is the use of the Green light because Green on this device should mean 24V but the IEEE 802.3af/at standard supports voltage between 37V and 57V so the blinking light would make more sense if it was Blue or a different colr. This device is small enough to fit in the palm of your hand so it makes a perfect addition to the toolbox of anyone performing network or PoE support. It is a great way to confirm there is or is not PoE voltage present from the network switch/PoE Injector and if it will work with the design of your PoE device. In my test, the PoE Detector showed a Mode B flashing Green light correctly indicating my network switch supported IEEE802.3af/at. This product is powered from the Ethernet connector so it will only work with network switches or POE injectors. If you connected a PoE end device to it or connected it to a non-PoE switch, nothing would light up on the device.
Paul Hicks
Reviewed in the United States on April 11, 2025
Good tool, does what it’s supposed to do. I’m running some Ethernet through my attic for some security cameras. I can just keep this in my pocket and as long as the other end of the cable is hooked up to a POE source, it’s super easy just to check that my cameras will get power once I plug them in. This should save me a lot of time troubleshooting since there are a couple bends that the cable needs to make it past. If the cable gets damaged, this should show me without needing to plug in the camera.
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