Feature: 1. Non Touch Type: This visual fault locator adopts non touch connection, which will not damage the end face of the fiber optic and transmitter, and the output power will not affected by voltage fluctuations, improving testing efficiency. 2. Output Parameters: The test distance is 80KM, the output wavelength is 650nm+ 10nm. This fiber optic red light pen can provide stable output power, efficient and energy saving. 3. High Performance: The visual fault detector is equipped with standard 2.5mm universal connector, suitable for various fiber types, enhancing the versatility. 4. Main Purpose: The pen type visual fault locator is designed specifically for maintaining optical cables and circuits, locating defects on optical fibers and cables, and searching for broken optical fibers and defective equipment. 5. Easy to Use: This fiber light pen features a portable design with an anti slip handle, providing a convenient and comfortable grip. Compact and lightweight, convenient to use anytime, anywhere. Specification: Item Type: Fiber Optic Visual Fault Locator Material: Aluminum Alloy VFL Testing Distance: 80KM Output Wavelength: 650nm+ 10nm Fiber Optic Adapter: Universal Connector Operating Temperature: 0 +60 celsius Storage Temperature: 20 +70 celsius Battery Type: 1 x Rechargeable Lithium Cell, Capacity 500mah (Built in). Package List: 1 x Fiber Optic Visual Fault Locator1 x Lanyard1 x USB C Charging Cable1 x User Manual