. Visual Fault Locators (VFL) / Fiber Optic Laser Pens
If you work in telecommunications or networking, this is a handheld, pen-shaped diagnostic tool. It injects a visible 650nm red laser into fiber optic cables to illuminate breaks, tight bends, or faulty splices.
• Key Specifications: They typically offer outputs between 10mW to 30mW, covering testing distances from 10km to 30km.
• Compatibility: Most come equipped with a standard 2.5mm universal connector compatible with SC, ST, and FC interfaces