--- product_id: 576785580 title: "Visual Fault Locator - Rechargeable Red Light VFL Fiber Optic Tool kit - Retractable Head fits SC FC ST - Optical Laser Light Pen - Network Cable Tester - with Protective Case and LC Adapter" brand: "sysotek" price: "€ 118.62" currency: EUR in_stock: true reviews_count: 5 category: "Sysotek" url: https://www.desertcart.hr/products/576785580-visual-fault-locator-rechargeable-red-light-vfl-fiber-optic-tool store_origin: HR region: Croatia --- # Retractable head with twist mechanism 1800mAh rechargeable battery 1mW Class I laser power Visual Fault Locator - Rechargeable Red Light VFL Fiber Optic Tool kit - Retractable Head fits SC FC ST - Optical Laser Light Pen - Network Cable Tester - with Protective Case and LC Adapter **Brand:** sysotek **Price:** € 118.62 **Availability:** ✅ In Stock ## Summary > 🔧 Light up your fiber faults — never miss a break again! ## Quick Answers - **What is this?** Visual Fault Locator - Rechargeable Red Light VFL Fiber Optic Tool kit - Retractable Head fits SC FC ST - Optical Laser Light Pen - Network Cable Tester - with Protective Case and LC Adapter by sysotek - **How much does it cost?** € 118.62 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/576785580-visual-fault-locator-rechargeable-red-light-vfl-fiber-optic-tool) ## Best For - sysotek enthusiasts ## Why This Product - Trusted sysotek brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Rugged Design:** Durable metal body with retractable head fits all major fiber connectors and slips easily into your pocket. - • **Endless Power On-the-Go:** Rechargeable 1800mAh battery delivers up to 40 hours standby and works while charging via USB-C. - • **Precision Laser Detection:** Bright 1mW red laser pinpoints fiber faults with unmatched clarity. - • **Safety & Compliance Guaranteed:** Class I laser ensures maximum visibility while meeting all workplace safety standards. - • **Dual Laser Modes + LED Flashlight:** Switch between constant and pulsing laser modes plus an integrated LED flashlight for versatile troubleshooting. ## Overview The Sysotek Visual Fault Locator is a professional-grade fiber optic testing tool featuring a bright 1mW red laser, rechargeable 1800mAh battery with USB-C charging, and a retractable head compatible with SC, FC, ST, and LC connectors. Designed for fiber technicians, it offers dual laser modes and an LED flashlight for precise fault detection in single mode and multimode cables. Its rugged metal construction and included protective case make it a durable, portable essential for network maintenance, fully compliant with safety standards. ## Description Sysotek’s 1mW visual fault locator fiber optic cable is an essential tool. As a fiber light tester and bonus fiber optic flashlight, it emits a powerful red lazer, detecting breaks in cables and connectors. The sc fiber tester and lc fiber tester supports SC, ST, FC APC & UPC. Designed for use with fiber optic installation tools and fiber optics tools, it significantly enhances fiber optic network maintenance. The compact mini fiber laser improves precision, while the fiber test light, fiber tester light, or fiber light source offer clear visibility. A long-lasting rechargeable battery with USB Type-C charging ensures extended use for every job. The included fiber light meter, light meter fiber optic, or fiber optic cable tester provide accurate readings in various environments. Ideal for fiber optic tools kit and optical fiber tools, this fiber light pen and optic pen are indispensable for any technician. The fiber fault locator is rechargeable. The fiber optic fault tester provides added convenience, while the fiber visual fault locator fiber optic tester and VFL fiber optic features guarantee effective troubleshooting. Review: Compared to the 4 others VFL's ive tried this one has amazing build quality. The fact its rechargable is just a cherry on top. Very sturdy design and nothing would randomly unscrew and fall off like the others ive had Review: I’ve been working with fiber optics off and on for a while now and just picked up this fiber optic visual fault locator, and honestly, I’m super impressed. If you’re like me and constantly dealing with cable issues and trying to troubleshoot stuff this tool is a lifesaver. Right away I noticed when I picked it up you can tell the VFL feels solid. It’s not one of those cheap plasticy tools that you feel like is gonna snap in half after one drop. It’s got a good weight to it. I’ve dropped it once accidentally, and i can't even tell. It’s super comfortable to hold, and perfect size and it fits in pocket easily or i can always tuck it away on a panel. The best feature is its rechargeable and the battery lasts long time. Uses USB c and I've used different ones to charge it no problem. I've let my colleague borrow this and he needed it to stay on for long time while he left his site and it works while it's plugged in. I’ve had this out on multiple jobs now, and it hasn’t run out of juice on me yet, which is a BIG plus when you’re in the middle of troubleshooting a huge network or need to travel and don’t have time for your tool to die. Ive used other cheap ones and they time out and anyone who uses these fiber light pens know that feature is horrible and makes them useless. The laser that comes out of it is super bright, so even in somewhat well lit spaces, you can easily see it shining through the fiber cable. The other main feature is that how you turn it on is by twisting it and the head pops out or retracts and doesn't need dust caps and is totally protected when it's off. It has Super nice hard protective shell case. Honestly if you need a vfl and are thinking about this one just do it. What an upgrade to other crap I've used. The laser is bright and I've tested long runs couple miles and no problems. Makes me laugh the advertising of the high powered ones for sale and going these crazy distances which are impossible. Any experienced tech knows that this type of laser light has a max distance in a fiber cable doesn't matter how strong the laser is. A fiber vfl is a lifesaver for troubleshooting fiber networks but its honestly actually essential and this ones all you will ever need. I’ve tried others, but this one’s definitely the best for the price. You get what you pay for. Definitely recommend it and super happy with this purchase. ## Features - DESIGNED FOR TECHS - The Visual Fault Locator or VFL fiber tester is essential for fiber optic technicians, using a fiber laser to emit bright red light that helps detect faults like breaks and bends in cables and fiber patch cords. 2.5mm head works with any 9/125um, single mode, multimode, APC or UPC cable. Bonus 1.25mm LC adaptor included. Perfect for techs or electrician tools set. The Fiber Laser pen ensures effective maintenance of optical networks like FTTH FTTX or FTTN and more! - RECHARGEABLE VFL - Save money with a 1800mAh lithium ion battery and never look or replace batteries again. Offering up to 40 hours of standby and can be used while charging. LED battery monitor and USB-C charging. Ideal for techs and fiber testers who use fiber optic light meters or in any situation where optical cables or network ports need to be identified or breaks in fiber lines need to be seen. Add the VFL fiber optic light source to you fiber tester tool kit. - LED FLASHLIGHT - CONSTANT & PULSING LASER MODE - Featuring an LED flashlight and two laser modes: constant and flashing. Easily inspect patch panel ports in hard to see locations like tech hubs, network centers, and data centers. Sysoteks redlight pen can identify faults in both single mode and multimode fiber. Essential for fiber optic cables and Ethernet connections. Versatile design makes it a must-have to any set of electrical tools or fiber optic testing equipment. - DURABLE & PORTABLE - Durable metal construction designed for commercial use. Compact & lightweight tool is perfect for telecom or electrical and fiber splicing professionals, easily fitting into your pocket or network tool kit. Superior to others, it complements OTDRs, power meters, fusion splicers, fiber splicer & strippers and fusion splicing tools. Essential for accurate fiber optic light meter readings and working seamlessly with fiber cleavers identifying proper cuts or misaligned splices. - SAFETY & COMPLIANCE - Class I 1mW laser - Compliant with work, health, and safety authorities. Sysotek designed this VFL pen with case to ensure you meet all job site regulations. The legal power limit provides a bright red light while keeping you, others, and fiber optic equipment safe. Ideal for pinpointing faults in optic cables. Our VFL fiber light is a must-have tool for any technician's toolkit. Class 1, 1mW is the industry standard for a reason. Be compliant, be safe! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BMY5NNB4 | | Best Sellers Rank | #75,570 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #103 in Network Testers | | Brand Name | Sysotek | | Cable Type | Fiber Optic | | Color | Silver | | Compatible Devices | Fiber Optic Patch Panels, Switches, Routers, Networking Equipment | | Compatible Phone Models | No Compatible Phone Models | | Connector Gender | Male-to-Female | | Connector Type | FC, SC, ST | | Customer Package Type | FFP | | Customer Reviews | 4.2 4.2 out of 5 stars (160) | | Ethernet Cable Category | Cat 6 | | Indoor Outdoor Usage | Indoor | | Item Shape | Round | | Item Weight | 3.39 Ounces | | Manufacturer | Sysotek | | Maximum Voltage | 1 Volts (DC) | | Model | RR01 | | Model Name | RR01 | | Number of Items | 1 | | Number of Pins | 2 | | Other Special Features of the Product | Easy to use and useful for fiber optic fault detection | | Outer Material | Metal | | Part Number | VFL-TQ-1 | | Recommended Uses For Product | Fiber Optic Cable Fault Detection, Optical Network Maintenance, Patch Panel Inspection | | Specification Met | RoHS | | UPC | 196852465934 | | Unit Count | 1.0 Count | | Wattage | 1 Milliwatts | ## Product Details - **Brand:** Sysotek - **Cable type:** Fiber Optic - **Compatible devices:** Fiber Optic Patch Panels, Switches, Routers, Networking Equipment - **Connector type:** FC, SC, ST - **Special features:** Easy to use and useful for fiber optic fault detection ## Images ![Visual Fault Locator - Rechargeable Red Light VFL Fiber Optic Tool kit - Retractable Head fits SC FC ST - Optical Laser Light Pen - Network Cable Tester - with Protective Case and LC Adapter - Image 1](https://m.media-amazon.com/images/I/71Sqe8HIH3L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by D***J on 21 April 2025* Compared to the 4 others VFL's ive tried this one has amazing build quality. The fact its rechargable is just a cherry on top. Very sturdy design and nothing would randomly unscrew and fall off like the others ive had ### ⭐⭐⭐⭐⭐ Review *by J***O on 15 April 2025* I’ve been working with fiber optics off and on for a while now and just picked up this fiber optic visual fault locator, and honestly, I’m super impressed. If you’re like me and constantly dealing with cable issues and trying to troubleshoot stuff this tool is a lifesaver. Right away I noticed when I picked it up you can tell the VFL feels solid. It’s not one of those cheap plasticy tools that you feel like is gonna snap in half after one drop. It’s got a good weight to it. I’ve dropped it once accidentally, and i can't even tell. It’s super comfortable to hold, and perfect size and it fits in pocket easily or i can always tuck it away on a panel. The best feature is its rechargeable and the battery lasts long time. Uses USB c and I've used different ones to charge it no problem. I've let my colleague borrow this and he needed it to stay on for long time while he left his site and it works while it's plugged in. I’ve had this out on multiple jobs now, and it hasn’t run out of juice on me yet, which is a BIG plus when you’re in the middle of troubleshooting a huge network or need to travel and don’t have time for your tool to die. Ive used other cheap ones and they time out and anyone who uses these fiber light pens know that feature is horrible and makes them useless. The laser that comes out of it is super bright, so even in somewhat well lit spaces, you can easily see it shining through the fiber cable. The other main feature is that how you turn it on is by twisting it and the head pops out or retracts and doesn't need dust caps and is totally protected when it's off. It has Super nice hard protective shell case. Honestly if you need a vfl and are thinking about this one just do it. What an upgrade to other crap I've used. The laser is bright and I've tested long runs couple miles and no problems. Makes me laugh the advertising of the high powered ones for sale and going these crazy distances which are impossible. Any experienced tech knows that this type of laser light has a max distance in a fiber cable doesn't matter how strong the laser is. A fiber vfl is a lifesaver for troubleshooting fiber networks but its honestly actually essential and this ones all you will ever need. I’ve tried others, but this one’s definitely the best for the price. You get what you pay for. Definitely recommend it and super happy with this purchase. ### ⭐⭐⭐⭐⭐ Review *by A***L on 12 April 2026* Thank you guys! ## Frequently Bought Together - Sysotek Visual Fault Locator - Rechargeable Red Light VFL Fiber Optic Tool kit - Retractable Head fits SC FC ST - Optical Laser Light Pen Network Cable Fiber Tester with Protective Case and LC Adapter - Jonard Tools M-216C/EX, Impact Resistant Hex Can Wrench with 7/16" and 3/8" Hex Sockets and Ergonomic Handle, 1" Diameter , 7" Length, Outer - D YEDEMC Fiber Optic Cable Tester - Portable Optical Fiber Power Meter with Universal FC/SC/ST Interface and Built-in 2Mw Visual Fault Locator (OPM-VFL-1) --- ## 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.hr/products/576785580-visual-fault-locator-rechargeable-red-light-vfl-fiber-optic-tool](https://www.desertcart.hr/products/576785580-visual-fault-locator-rechargeable-red-light-vfl-fiber-optic-tool) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-18*