Portable fiber laser pointer fiber optic tool VFL 15mw rechargeable 15km vfl fiber optic visual fault locator B4 Series VFL Pen – Professional Visual Fault Locator with Adjustable Power & LED Flashlight The B4 Series VFL Pen is a next-generation visual fault locator designed for fiber optic technicians and network installers. Featuring an innovative hidden laser head design, adjustable power settings, built-in LED flashlight, and large-capacity lithium battery, this professional tool offers enhanced durability, precision, and convenience for fiber optic testing and troubleshooting. �� Key Features: ��️ Hidden Laser Head Design Laser head automatically extends when powered on and retracts when turned off, providing superior protection and longer service life. ⚡ Adjustable Power Output Three adjustable power settings (except 5mW model) allow you to customize output based on testing requirements, saving energy and extending battery life. �� Large Capacity Lithium Battery Built-in environmentally friendly rechargeable lithium battery with running light display during charging for clear power status monitoring. �� Built-in LED Flashlight High-brightness LED flashlight for inspecting fiber connections and working in dark environments. �� Universal Interface Compatibility Supports SC, FC, and ST fiber optic interfaces with 2.5mm universal adapter to meet different testing needs. �� Replaceable Ceramic Core User-replaceable ceramic ferrule design extends product lifespan and reduces maintenance costs. �� Model Specifications & Power Settings: Model Maximum Power 1st Gear 2nd Gear 3rd Gear Power Adjustable SG-B405 >5mW 5mW – – No SG-B415 >15mW 5mW 10mW 15mW Yes SG-B420 >20mW 5mW 10mW 20mW Yes SG-B430 >30mW 10mW 20mW 30mW Yes �� Product Specifications: Output Wavelength 650nm (Red Laser) Interface Type 2.5mm Universal Adapter (Supports SC, FC, ST) Power Supply Built-in Rechargeable Lithium Battery Charging Voltage/Current 5V / ≤300mA Charging Time ≤3-5 hours (depending on model) Battery Life 3.5 to 10 hours (depending on model and power setting) Operating Temperature -20°C to 60°C (-4°F to 140°F) no condensation Storage Temperature -40°C to 85°C (-40°F to 185°F) Product Dimensions 127mm × 45mm × 20mm (5.0″ × 1.8″ × 0.8″) Net Weight 81g (2.86 oz) Package Dimensions 150mm × 62mm × 40mm (5.9″ × 2.4″ × 1.6″) �� Control Instructions: �� Toggle Switch Power On: Push up to turn on 650nm red light (laser head extends automatically) Power Off: Push back to turn off red light (laser head retracts) �� Red Light Button Short Press: Cycle through power settings (Low → Medium → High) Long Press (2s): Toggle between continuous and flashing modes �� Flashlight Button Short Press: Turn on LED flashlight Long Press (1s): Turn off LED flashlight ⚡ Charging Options: �� Power Bank �� Computer USB �� Phone Charger �� Any USB Port Running Light Display: Charging status is clearly indicated with running lights that show power level �� Package Includes: B4 Series VFL Pen (Visual Fault Locator) USB Charging Cable Instruction Manual Product Warranty Card Product Certificate Storage/Carrying Case �� Professional Applications: Ideal for fiber optic technicians, network installers, telecommunications professionals, and data center engineers. Perfect for locating fiber breaks, identifying macro bends, tracing fibers, testing continuity, and verifying connections in FTTH, CATV, and telecommunications networks. ⚠️ IMPORTANT SAFETY WARNING: LASER RADIATION HAZARD: This device emits visible laser radiation at 650nm. Never look directly into the laser beam or view it with optical instruments. Always point the laser away from eyes and face. Laser radiation can cause serious eye injury. When replacing the ceramic core, ensure the device is powered off and follow instructions carefully. The B4 Series VFL Pen combines innovative design with professional performance, offering fiber optic technicians a reliable, durable, and user-friendly tool for efficient fault location and network testing. With its adjustable power settings, hidden laser head protection, and versatile charging options, it’s designed to meet the demands of modern fiber optic installations and maintenance. https://e-link.us/wp-content/uploads/2025/08/B4红光笔_compressed.mp4 https://www.youtube.com/@e-Link-n6r
