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🚀 Detect fiber signals in a flash—because downtime is not an option!
The Fluke Networks FIBERLERT-125 is a compact, battery-powered fiber optic cable tester and detector that instantly identifies live fiber signals across single-mode and multimode wavelengths (850-1625 nm). Featuring a non-contact sensor to protect delicate fibers, intuitive light and sound indicators, and a 5-minute auto power-off function, it’s engineered for fast, reliable diagnostics in professional network environments. Backed by a two-year warranty, this tool is a must-have for managers and technicians who demand precision and efficiency in fiber optic maintenance.








| ASIN | B09KZV7V2J |
| Best Sellers Rank | #40,290 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #73 in Network & Cable Testers |
| Brand | Fluke Networks |
| Brand Name | Fluke Networks |
| Color | Black, white, yellow |
| Customer Reviews | 4.7 out of 5 stars 177 Reviews |
| Included Components | FiberLert, Two alkaline batteries |
| Item Dimensions | 6.6 x 0.6 x 1 inches |
| Item Weight | 0.22 Ounces |
| Item dimensions L x W x H | 6.6 x 0.6 x 1 inches |
| Manufacturer | Fluke Corporation |
| Measurement Type | Optical Power Meter |
| Model | FIBERLERT-125 |
| Part Number | 5317262 |
| Power Source | Battery Powered |
| Specification Met | CE, FCC |
| Style | Modern, Compact |
| Style Name | Modern, Compact |
| UPC | 195112035665 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 50 Degrees Celsius |
| Warranty Description | Two year warranty |
J**G
Works perfectly
Fluke Networks never fails to impress, and the FIBERLERT-125 Fiber Optic Cable Tester and Detector is another testament to their quality. This tester is a game-changer for anyone dealing with fiber optic cables. Its accuracy and reliability in detecting cable breaks and faults are remarkable, making troubleshooting a breeze. The user-friendly interface and intuitive design make it easy to use, even for those new to cable testing. The durability and precision of this device make it a must-have for professionals working with fiber optics. Highly recommended for its efficiency and peace of mind it brings to cable maintenance and repair tasks." Please note that this is a generic review and may not accurately reflect the specific features or experiences with the Fluke Networks FIBERLERT-125. If you have any firsthand experience or specific details you'd like to include in the review, feel free to provide them for a more tailored and accurate review
I**S
Fiberlert
Pretty neat tool, got mine with batteries in them already. Did anyone have to buy new batteries?
S**N
Troubleshooting must have
Works great! If you work with fiber this is a great tool to help troubleshoot issues.
R**.
Great tool to have in your IT toolbox!
Great for checking SFP's!
J**Y
Product is a must have to verify all fiber pathways
This solved a problem for myself and organization because we forgot our light source. This is the only thing i had in my tool bag to verify the pathway for our fiber connections. Thank you fluke. I have a lot of your products as a Wireless RF Engineer. You all are rock solid company. The smallest, lightest, and the cheapest tool that i have to check a fiber pathway.
M**G
Handy
This saves a lot of time and frustration. I connect fiber for a living.
R**E
I bought the wrong tool
this was a costly purchase but it does not have a light to trace fiber and that is what I was looking for.
C**Y
Cheap alternative to more expensive tools
Pretty nice tool to have in your tool belt as a network admin. Simply detects light on a fiber strand. No more, no less. You'll need a more feature rich (expensive) tool to really troubleshoot fiber issues, but if you just need to make sure there is light making it through your fiber, this works great.
E**I
Easy to use
This tester is simple to use and very helpful when all you need is to see if the fiber has a good connection.
A**R
Useful piece of kit!
This is a very useful fibre optic detector, can save a lot of time checking cables, SPF modules etc,. Works well with no hassles or issues.
V**A
Works as expected
When you have MM fiber, you can use your phone camera but under SM this tools is a “must”
K**N
Active fiber ports
Works like a charm
P**N
Fluke Fiber Detector
Das beste Tool ever, was ich bis jetzt gesehen und benutzt habe. Ich kann ohne teures Equipment SFP-Module auf Sendefunktion testen. Und wer schon mal Switche über eine Inhouse-Verkabelung geschaltet hat, weiß über die Vorteile Bescheid, wenn er am anderen Ende vom LWL-Patchpanel weiß auf welcher Faser das Signal ankommt.
Trustpilot
2 months ago
1 week ago