TFI-40 Optical Fiber Identifier All-in-one Chuck Live with 10mw VFL 800nm-1700nm Fiber Detector Traffic Identifier OFI

Work perfect for troubleshooting and to see if you got light levels before you cut it or before the splicer you don’t need a pick tail to check the light for troubleshooting came with laser on the bottle. Also, A light if you work in the dark.

I’m a fiber technician and I got this tool for two reasons: I wanted to be able to see if a fiber has traffic without unplugging it, and I wanted something that could detect 2khz tone. This product does both. I paired it with the Orientek T15M light source, which I use to generate the 2khz tone. This device always picks up the tone — the furthest distance I’ve tested so far is around 6,000ft. So I’m satisfied with that function. I compared the wand’s db readings to the db readings from my Viavi Optimeter, and the wand tends to read over or under by quite a bit… but that’s a $5,000 meter and this is a $70 wand. Bottom line: if there’s traffic on the fiber, it always detects traffic. If there’s no traffic, it always reads “Lo.” Other reviews have said that they have issues with the wand reading no traffic when the fiber does have traffic, but I have not encountered this issue in the field after 1 month of use. I would say I 100% trust this device as a live fiber identifier. Only possible quirk is that it often detects 270hz tone on fibers that do not have a tone generator hooked up to them. I cannot tell if this is a defect in the device, or if there is something on my employer’s fiber network that reads as 270hz. So, the only issue I’ve had to work around is double checking that when the wand beeps from the tone, it’s reading the 2khz from my light source and not the 270hz from the splitter. Conclusion: it does what it’s supposed to do very well for the price. If you want pinpoint precision, then you’ll have to look in the $600 - $2,000 price range for an EXFO or Jonard wand. But if you already have a good db meter and want something under $100 for detecting traffic and tone, this is your best option.

This is a great value for this product. It came quickly and worked as expected. Quality is also a expected. Even had a built in flash light along with the red light vault locator.

Excellent tool. It arrived on time and was of good quality. I use it daily at work and it's never had a problem. I recommend it 100 percent.

Works good but doesn’t read well unless the Fiber is stripped all the way down.

Buena calidad y se recibió en el tiempo establecido cuando lo compramos.

Does work but feels cheap. Plastics are lower quality and the screen is hard to read in direct sunlight. Taking a photo of the reading is difficult aswell (have to tilt it around for angle). I use this for work every day and it has been working for months now. For the price this delivered what was expected. Readings vary by how hard you pull on the trigger too but not by much. Good tool to find light but not for exact readings.

I tried it on some 900 micron coated fiber with about -20dB light on it and it said -30dB. I cut off a bit of slack from the same fiber and used it on the loose slack with no light on it at all and it said -28dB. I didn't even want it for an accurate reading, just to see if light was on the fiber or not, but given it gave me a higher light level when no light was even on the fiber versus light being on the fiber, it's useless for even that purpose. It would be different if it was just inaccurate by a couple dB, but this is inaccurate it ways that don't make sense. Don't waste your money.