---
product_id: 556201911
title: "Fluke Networks FIBERLERT-125 - Single Pack"
brand: "fluke networks"
price: "€ 293.72"
currency: EUR
in_stock: true
category: "Fluke Networks"
url: https://www.desertcart.de/products/556201911-fluke-networks-fiberlert-125-single-pack
store_origin: DE
region: Germany
---

# Detects 850-1625 nm fiber wavelengths 5-min auto power-off for battery saving Non-contact detection for SM/MM, UPC/APC Fluke Networks FIBERLERT-125 - Single Pack

**Brand:** fluke networks
**Price:** € 293.72
**Availability:** ✅ In Stock

## Summary

> 🚦 Light up your fiber game—detect signals in a flash!

## Quick Answers

- **What is this?** Fluke Networks FIBERLERT-125 - Single Pack by fluke networks
- **How much does it cost?** € 293.72 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/556201911-fluke-networks-fiberlert-125-single-pack)

## Best For

- fluke networks enthusiasts

## Why This Product

- Trusted fluke networks brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Battery Smart Tech:** Auto shutoff after 5 minutes extends 2xAAA battery life
- • **Compact & Portable:** Pocket-sized design fits perfectly in your toolkit or pocket
- • **Universal Compatibility:** Works seamlessly with single-mode, multimode, UPC, and APC fibers
- • **Visual & Audible Alerts:** LightBeat LED flashes and sound indicators keep you informed on the go
- • **Instant Fiber Signal Detection:** No setup needed—light & sound confirm activity immediately

## Overview

The Fluke Networks FIBERLERT-125 is a compact, battery-powered live fiber detector that instantly verifies optical signals across single-mode and multimode fibers (850-1625 nm). Featuring non-contact detection for UPC and APC connectors, it uses light and sound alerts with a LightBeat LED indicator and smart auto power-off to maximize battery life, making it an essential tool for fiber professionals on the move.

## Description

Quickly verify fiber activity, polarity, and connectivity with the FiberLert Live Fiber Detector. This pocket-sized tool tests single-mode, multimode, UPC and APC patch cords and ports with a non-contact / non-contaminating detector. The LightBeat feature flashes the LED, indicating a powered-on condition and good battery, a timer shuts FiberLert off after five minutes of inactivity to extend battery life.

## Features

- Detects optical power in single-mode and multimode fiber wavelengths (near infrared range 850 nm to 1625 nm)
- No setup or interpretation needed - light and sound indicate presence of an optical signal
- 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 of inactivity to preserve battery life (2xAAA, included)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09KZV7V2J |
| ASIN  | B09KZV7V2J |
| Batteries  | 2 AAA batteries required. (included) |
| Best Sellers Rank | #87,179 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #419 in Multi Testers |
| Brand Name | Fluke Networks |
| Color | Yellow |
| Customer Reviews | 4.7 4.7 out of 5 stars (171) |
| Customer reviews | 4.7 4.7 out of 5 stars (171) |
| Date First Available  | 16 August 2023 |
| Included Components | Fluke FIBERLERT |
| Item Dimensions | 16.8 x 1.5 x 2.5 centimeters |
| Item Type Name | test and measurement tools |
| Item Weight | 0.22 Ounces |
| Item model number  | FIBERLERT-125 |
| Manufacturer | Fluke Networks |
| Manufacturer  | Fluke Networks |
| Measurement Type | Optical Power |
| Model | FIBERLERT-125 |
| Part Number | 5317262 |
| Power Source | Battery Powered |
| Product Dimensions  | 16.76 x 1.52 x 2.54 cm; 6.24 g |
| Specification Met | CE |
| Style Name | Modern, Compact |
| UPC | 195112035665 |
| Upper Temperature Rating | 50 Degrees Celsius |

## Product Details

- **Brand:** Fluke Networks
- **Colour:** Yellow
- **Item weight:** 0.22 Ounces
- **Power source:** Battery Powered
- **Style:** Modern, Compact

## Images

![Fluke Networks FIBERLERT-125 - Single Pack - Image 1](https://m.media-amazon.com/images/I/51xHfF+QSyL.jpg)
![Fluke Networks FIBERLERT-125 - Single Pack - Image 2](https://m.media-amazon.com/images/I/41+MFcSs2lL.jpg)
![Fluke Networks FIBERLERT-125 - Single Pack - Image 3](https://m.media-amazon.com/images/I/41k-N++fRQL.jpg)
![Fluke Networks FIBERLERT-125 - Single Pack - Image 4](https://m.media-amazon.com/images/I/51mXTs5TXDL.jpg)
![Fluke Networks FIBERLERT-125 - Single Pack - Image 5](https://m.media-amazon.com/images/I/61DS0COv+wL.jpg)

## Questions & Answers

**Q: How does it see polarity?**
A: In terms of polarity, there is no “+” or “-“ as with electrical current. There is only direction of light flow. The tester itself will indicate if there is light flow in a strand and from which direction.

**Q: can't i just use my phone's camera to check for light coming from transceiver? how is this better?**
A: Camera on a phone works great, most of the time.  However, here is why I tend to use the FiberLert

- I struggle to see dim 850nm light and often fail to detect 1300nm or 1550nm light ... perhaps this tells you more about my aging eyes or the quality of the camera on my phone ... but that's my experience

- In tight spaces, I can maneuver the FiberLert into a place where I cannot fit a camera

- I appreciate the ease and speed of mating the FiberLert with the patch cord or bulkhead connector along with the combination of the blinky light plus the audible beep, announcing the presence of light -- fast feedback, as compared to positioning the camera, angling it appropriately, and then staring intently to detect the light

That being said, camera on the phone works most of the time

## Frequently Bought Together

- Fluke Networks FIBERLERT-125 Fiber Optic Cable Tester and Detector
- Visual Fault Locator 30KM, VFL Fiber Optic Tester Kit - Include Single Mode 9/125um FC Male to LC Female Adapter, Light Pen for Fiber Network Cable Test
- FiberShack - 1.25mm LC Fiber Cleaner Pen. 800+ Single Click Fiber Cleaner. LCUPC Optical Connector Cleaner & Endface Cleaning Pen Comes with Damage Protection Case & Dust Caps

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-07-28*