{"product_id":"k-c15-50km-visual-fault-locator-pen-650nm-fiber-optic-cable-tester","title":"K-C15 50KM Visual Fault Locator | 650nm Fiber Optic Tester Pen","description":"\n\u003ch2\u003eK-C15 Visual Fault Locator Pen – 50KM Fiber Optic Cable Tester\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eK-C15 Visual Fault Locator\u003c\/strong\u003e is a professional-grade, pen-style fiber optic tester designed for technicians and engineers who need fast, reliable identification of faults in optical fiber cables. Using a bright \u003cstrong\u003e650nm visible red laser\u003c\/strong\u003e, this compact tool lets you pinpoint break points, bending faults, damaged connectors, and continuity issues across distances rated up to \u003cstrong\u003e50KM\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eWith its \u003cstrong\u003eUSB Type-C rechargeable\u003c\/strong\u003e built-in battery, 2.5mm universal interface, and dual working modes, this VFL pen is ideal for FTTH installations, telecom maintenance, data centers, LAN projects, and patch panel troubleshooting.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e50KM Rated Test Distance:\u003c\/strong\u003e Engineered for long-distance optical fiber inspection. Actual visible range varies based on fiber loss, connector condition, and ambient light.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e650nm Visible Red Laser:\u003c\/strong\u003e Clearly illuminates fiber break points, bends, connector damage, and continuity faults. Output wavelength: 650nm ±10nm.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThree Working Modes:\u003c\/strong\u003e Slide switch with CW (continuous light), GLINT (blinking light), and OFF positions for versatile fault identification.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2.5mm Universal Interface:\u003c\/strong\u003e Compatible with SC, FC, and ST connectors. LC connector compatibility requires an optional adapter.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB Type-C Rechargeable:\u003c\/strong\u003e Built-in rechargeable battery — no disposable batteries needed. Charges via any standard USB power source.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePen-Style Portable Design:\u003c\/strong\u003e Textured anti-slip grip for comfortable handling. Compact enough to carry in a pocket, tool bag, or protective pouch.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProtective Dust Cap:\u003c\/strong\u003e Yellow cap guards the optical interface from dust and debris when not in use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSuitable Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFiber optic cable continuity testing\u003c\/li\u003e\n  \u003cli\u003eFiber break point and fault detection\u003c\/li\u003e\n  \u003cli\u003eOptical connector inspection\u003c\/li\u003e\n  \u003cli\u003eFTTH installation and maintenance\u003c\/li\u003e\n  \u003cli\u003eTelecom network maintenance\u003c\/li\u003e\n  \u003cli\u003eData center fiber inspection\u003c\/li\u003e\n  \u003cli\u003eLAN and optical communication projects\u003c\/li\u003e\n  \u003cli\u003ePatch panel troubleshooting\u003c\/li\u003e\n  \u003cli\u003eFiber bending and leakage inspection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnect the Fiber:\u003c\/strong\u003e Open the protective cap and plug the fiber connector into the 2.5mm interface.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelect Working Mode:\u003c\/strong\u003e Slide the switch to CW for continuous light or GLINT for blinking light.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLocate the Fault:\u003c\/strong\u003e Observe the fiber cable — visible red light leaking from the cable indicates a break, bend, crack, or poor connection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSwitch Off:\u003c\/strong\u003e Return the switch to OFF and replace the protective cap after use.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e K-C15\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Test Distance:\u003c\/strong\u003e Up to 50KM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Wavelength:\u003c\/strong\u003e 650nm ±10nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorking Modes:\u003c\/strong\u003e CW \/ OFF \/ GLINT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e 2.5mm universal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Connectors:\u003c\/strong\u003e SC \/ FC \/ ST (LC requires optional adapter)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCharging Port:\u003c\/strong\u003e USB Type-C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e Built-in rechargeable battery\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Design:\u003c\/strong\u003e Portable pen-style with textured anti-slip grip\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Includes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Visual Fault Locator Pen (K-C15)\u003c\/li\u003e\n  \u003cli\u003e1 × USB Type-C Charging Cable\u003c\/li\u003e\n  \u003cli\u003e1 × Wrist Strap\u003c\/li\u003e\n  \u003cli\u003e1 × Protective Carrying Pouch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003ePackage contents may vary slightly depending on the selected option. Please verify the product variation before purchase.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eImportant Safety Notes\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eDo not look directly into the laser output.\u003c\/li\u003e\n  \u003cli\u003eDo not point the laser toward people or animals.\u003c\/li\u003e\n  \u003cli\u003eKeep the protective cap closed when the tester is not in use.\u003c\/li\u003e\n  \u003cli\u003eClean the fiber connector before testing for reliable results.\u003c\/li\u003e\n  \u003cli\u003eMaximum test distance depends on fiber type, cable quality, connector loss, and environment.\u003c\/li\u003e\n  \u003cli\u003eLC connector requires a compatible adapter (not included).\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/25-in-1-precision-magnetic-screwdriver-set-pro-repair-tool-kit\"\u003e25-in-1 Precision Magnetic Screwdriver Set | Pro Repair Kit\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/34-compartment-double-sided-hardware-storage-box-removable-dividers\"\u003e34-Compartment Double-Sided Hardware Storage Box \u0026amp; Dividers\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/waterproof-cable-gland-set-pg7-pg9-nylon-connectors-10-pack\"\u003e10-Pack Waterproof Cable Glands PG7 PG9 Nylon Connectors\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What fiber connectors are compatible with the K-C15 Visual Fault Locator?\u003c\/h4\u003e\n\u003cp\u003eA: The K-C15 features a standard 2.5mm universal interface that is directly compatible with SC, FC, and ST fiber connectors. LC connectors can also be used but require a separate compatible LC adapter, which is not included in the standard package.\u003c\/p\u003e\n\u003ch4\u003eQ: How far can the K-C15 Visual Fault Locator detect fiber faults?\u003c\/h4\u003e\n\u003cp\u003eA: The K-C15 is rated for a maximum test distance of up to 50KM. However, the actual visible detection range will vary depending on factors such as fiber type, cable quality, connector loss, and ambient lighting conditions in the work environment.\u003c\/p\u003e\n\u003ch4\u003eQ: How do I charge the K-C15 Visual Fault Locator Pen?\u003c\/h4\u003e\n\u003cp\u003eA: The K-C15 features a USB Type-C charging port. Simply connect the included USB Type-C charging cable to any standard USB power source (such as a laptop, wall adapter, or power bank) to recharge the built-in battery — no disposable batteries required.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the difference between CW and GLINT modes on the K-C15?\u003c\/h4\u003e\n\u003cp\u003eA: CW (Continuous Wave) mode emits a steady, uninterrupted red laser beam, which is ideal for straightforward continuity testing and connector inspection. GLINT mode produces a blinking red light, which makes it easier to spot subtle faults, bending points, or light leakage in varying work environments.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What fiber connectors are compatible with the K-C15 Visual Fault Locator?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The K-C15 features a standard 2.5mm universal interface that is directly compatible with SC, FC, and ST fiber connectors. LC connectors can also be used but require a separate compatible LC adapter, which is not included in the standard package.\"}}, {\"@type\": \"Question\", \"name\": \"How far can the K-C15 Visual Fault Locator detect fiber faults?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The K-C15 is rated for a maximum test distance of up to 50KM. 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