--- product_id: 731873676 title: "Fluke Networks Genuine Fiber Optic Cable Tester and Detector Current Optical Identifier FIBERLERT-125" brand: "fluke networks" price: "$246.59" currency: USD in_stock: true reviews_count: 5 url: https://www.desertcart.us/products/731873676-fluke-networks-genuine-fiber-optic-cable-tester-and-detector-current store_origin: US region: United States of America --- # 850-1625 nm wavelength range Light & sound alerts Auto shutoff extends battery life Fluke Networks Genuine Fiber Optic Cable Tester and Detector Current Optical Identifier FIBERLERT-125 **Brand:** fluke networks **Price:** $246.59 **Availability:** ✅ In Stock ## Summary > 🚀 Light up your fiber testing game with Fluke’s precision and ease! ## Quick Answers - **What is this?** Fluke Networks Genuine Fiber Optic Cable Tester and Detector Current Optical Identifier FIBERLERT-125 by fluke networks - **How much does it cost?** $246.59 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/731873676-fluke-networks-genuine-fiber-optic-cable-tester-and-detector-current) ## 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 - • **Smart Power Management:** LED status indicator plus automatic 5-minute shutoff maximizes battery life for uninterrupted fieldwork - • **Universal Compatibility:** Works flawlessly with SM, MM, UPC, and APC fiber connections and patch cords - • **Non-Contact Safety Design:** Protects delicate fiber ends by detecting light without physical contact, reducing contamination risk - • **Instant Light & Sound Alerts:** No setup or guesswork—immediate confirmation with intuitive LED flashes and audible signals - • **Seamless Multi-Wavelength Detection:** Detects single-mode & multi-mode fiber signals from 850 to 1625 nm effortlessly ## Overview The Fluke Networks FIBERLERT-125 is a cutting-edge fiber optic cable tester and detector that identifies live optical signals across a broad wavelength range (850-1625 nm). Featuring non-contact detection, intuitive light and sound alerts, and compatibility with all major fiber types, it ensures fast, safe, and reliable field diagnostics. Its smart battery management and compact design make it an indispensable tool for professionals demanding accuracy and efficiency. ## Description Fluke Networks FIBERLERT-125 Fiber Optic Cable Tester and Detector Current Optical Identifier ## Features - Detects existing light with single-mode and multi-mode fiber optic wavelengths (near infrared 850 nm - 1625 nm) - Light and sound alerts the presence of light signals, no need to set up or interpret test results - The "non-contact" detector reduces the risk of dirt and damage to the object being measured - Supports ports and patch cords, SM, MM, UPC and APC connections - LightBeats flashes LED to indicate operation and battery status. It also shuts off after 5 minutes of non-use to extend battery life ## Technical Specifications | Specification | Value | |---------------|-------| | Amazon Bestseller | #173,703 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #2,006 in Voltage Testers | | Asin | B09KZV7V2J | | Brand Name | Fluke Networks | | Customer Reviews | 4.7 4.7 out of 5 stars (172) 4.7 out of 5 stars | | Included Components | FiberLert Alkaline Batteries x 2 | | Item Dimensions | 16.8 x 1.5 x 2.5 cm | | Item Weight | 0.22 Ounces | | Manufacturer | Fluke Networks | | Measurement Type | Optical Power Meter | | Model | FIBERLERT-125 | | Part Number | 5317262 | | Power Source | Battery Powered | | Specification Met | CE, FCC | | Style Name | Modern | | Unit Count | 1.00 Count | | Upc | 195112035665 | | Upper Temperature Rating | 50 Degrees Celsius | ## Product Details - **Brand:** Fluke Networks - **Power Source:** Battery Powered - **Style:** Modern - **Item Weight:** 0.22 Ounces - **Item dimensions L x W x H:** 16.8 x 1.5 x 2.5 cm ## Images ![Fluke Networks Genuine Fiber Optic Cable Tester and Detector Current Optical Identifier FIBERLERT-125 - Image 1](https://m.media-amazon.com/images/I/51xHfF+QSyL.jpg) ![Fluke Networks Genuine Fiber Optic Cable Tester and Detector Current Optical Identifier FIBERLERT-125 - Image 2](https://m.media-amazon.com/images/I/41+MFcSs2lL.jpg) ![Fluke Networks Genuine Fiber Optic Cable Tester and Detector Current Optical Identifier FIBERLERT-125 - Image 3](https://m.media-amazon.com/images/I/41k-N++fRQL.jpg) ![Fluke Networks Genuine Fiber Optic Cable Tester and Detector Current Optical Identifier FIBERLERT-125 - Image 4](https://m.media-amazon.com/images/I/51mXTs5TXDL.jpg) ![Fluke Networks Genuine Fiber Optic Cable Tester and Detector Current Optical Identifier FIBERLERT-125 - 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 ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy to use *by on Reviewed in Canada December 17, 2023* This tester is simple to use and very helpful when all you need is to see if the fiber has a good connection. ### ⭐⭐⭐⭐⭐ Troubleshooting must have *by on Reviewed in the United States May 18, 2026* Works great! If you work with fiber this is a great tool to help troubleshoot issues. ### ⭐⭐⭐⭐ Useful piece of kit! *by on Reviewed in the United Kingdom May 16, 2023* 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. ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/731873676-fluke-networks-genuine-fiber-optic-cable-tester-and-detector-current](https://www.desertcart.us/products/731873676-fluke-networks-genuine-fiber-optic-cable-tester-and-detector-current) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-15*