Feature:1. OPTICAL CABLE MAINTENANCE: Fiber visual fault locator is designed to test and maintain fiber optic cables and lines effectively.2. LOCATE CABLE DEFECTS: Fiber light test pen helps locate cable faults and visually search fiber breaks with ease, with an output distance of up to 30KM.3. NON CONTACT: Non contact connection method ensures that the end faces of the optical fiber and transmitter are undamaged.4. STABLE POWER: Fiber visual fault tester gives stable power output, unaffected by voltage fluctuations, ensuring a reliable tool.5. PORTABLE AND ENERGY SAVING: Fiber optic cable tester is lightweight, compact, and easy to carry, perfect for daily maintenance work.Specification:Item Type: Visual Fault LocatorMaterial: Aluminum AlloyModel: AUA 30Fiber Optic Adapter: Universal ConnectorOutput Distance: 30KMOutput Wavelength: 65010nmOperating Temperature: 0 to +60Storage Temperature: -20 to +70Battery Type: Requires AA Battery x 2 (Shipped Without Battery).Package List:1 x Visual Fault Locator1 x User Manual1 x Ceramic Core1 x Adapter1 x Pen Bag1 x Lanyard