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FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
12 left in stock
Arrives
Monday, Nov 16
Recently Viewed
At a glance
- Condition
- New
- Model
- FIBERLERT-125
- Dimensions
- 6.6 x 0.6 x 1 in
- Weight
- 6.26 g
- Color
- Black, white, yellow
- Power Source
- Battery Powered
- Style
- Modern, Compact
- In the box
- FiberLertTwo alkaline batteries
- Warranty
- Two year warranty
Features 5
- Detects optical power in single-mode and multimode fiber wavelengths (near infrared range 850 to 1625 nm)
- No setup or interpretation needed light and sound indicate presence of optical signal
- Non-contact detector lessens the risk of damage to fiber optics; suitable for ports and patch cords, SM, MM, UPC and APC connections
- LightBeat flashes to indicate operation and battery status; powers off after five minutes to preserve battery (2xAAA, included)
- Two-year warranty
Description
No more guessing if the fiber is live. Quickly check fiber activity, polarity, and connectivity. No setup or interpretation required – just place in front of the fiber end face or port and a light and tone indicate an active fiber. This pocket-sized tool tests single-mode, multimode UPC and APC patch cords and ports using a “non-contact” detector. The FIBERLERT-125, detects for the presence of 850 nm to 1625 nm optical light.
Specs 17
| Brand | Fluke Networks |
|---|---|
| Power Source | Battery Powered |
| Style | Modern, Compact |
| Color | Black, white, yellow |
| Item Weight | 6.26 g |
| Upper Temperature Rating | 50 °C |
| Measurement Type | Optical Power Meter |
| Style Name | Modern, Compact |
| Item Dimensions | 6.6 x 0.6 x 1 inches |
| Specification Met | CE, FCC |
| Brand Name | Fluke Networks |
| Model | FIBERLERT-125 |
| Unit Count | 1 Count |
| UPC | 195112035665 |
| Number of Items | 1 |
| Manufacturer | Fluke Corporation |
| Part Number | 5317262 |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Nov 16
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Learn more about financing & leasing here.
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Top Amazon Reviews
Troubleshooting must have
Works great! If you work with fiber this is a great tool to help troubleshoot issues.
Reviewed in the United States on May 18, 2026 by shawn Fannin
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
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Reviewed in the United States on December 15, 2023 by Joe Banning
Fiberlert
Pretty neat tool, got mine with batteries in them already. Did anyone have to buy new batteries?
Reviewed in the United States on December 23, 2025 by Ider Vivas
Great tool to have in your IT toolbox!
Great for checking SFP's!
Reviewed in the United States on January 9, 2026 by Richard W.
Handy
This saves a lot of time and frustration. I connect fiber for a living.
Reviewed in the United States on August 24, 2024 by Montag
Connector broke off
This is an excellent product, the only downside is that the plastic connector gradually weakened and broke off.
Reviewed in the United States on June 27, 2026 by joules b
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.
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Reviewed in the United States on June 26, 2024 by ctpenny
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.
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Reviewed in the United States on March 12, 2025 by Jimmy