Feature:1. [Optical Maintenance Tool] This fiber visual fault locator is an ideal tool for fiber optic cable and line maintenance, designed to locate defects on cables and visually search for fiber breaks.2. [10KM Detection] Our visual fault locator can locate faults, breaks, and defects in cables and fibers up to 10km, suitable for various applications.3. [Non Contact Connection] This fiber red light pen uses non contact connection, eliminating any possible damage to the fiber and transmitter ends.4. [Stable Output] The output power will not affected by voltage fluctuations, this visual fault locator could stably output power, ensuring its reliability.5. [Lightweight and Compact] The fiber light tester is lightweight and portable, making it an easy tool to take on the go for all your troubleshooting needs.Specification:Item Type: Fiber Visual Fault LocatorMaterial: ABSModel: VFL 22M G 10Battery: 2 x AAA (Not Included)Output Wavelength: 650nm10nmFiber Adapter: Universal ConnectorOperating Temperature: -20 to +60Output Distance: 10km.Package List:1 x Fiber Visual Fault Locator