Feature: 1. PORTABLE DESIGN: Optical fiber visual fault locator, the output wavelength is 650±10nm, the pen design is convenient to hold and carry. 2. MAIN FUNCTION: Specially designed for maintenance of optical cable, used to locate cables and detect whether optical fibers are defective. 3. GOOD PERFORMANCE: Non contact connection, lossless end face of optical fiber transmitter, output power is not affected by voltage fluctuation. 4. ALUMINIUM ALLOY: The optical fiber test pen is made of aluminum alloy, which is resistant to corrosion and oxidation, lightweight and durable. 5. WITH ADAPTER: Equipped with FC to LC adapter, the optical fiber pen is applicable to more needs, with stable output and strong practicability. Specification: Item Type: Visual Fault Locator Model: AUA H50 Material: Aluminum Alloy Output Power: >50MW Output Distance: 50KM Output Wavelength: 650±10nm Operating Temperature: 0-60℃ Storage Temperature: -20-70℃ Battery Type: 2 x 1.5V AA Battery (not included). Package List: 1 x Optical Fiber Pen1 x Pen Bag1 x Hanging Rope1 x Ceramic Core1 x User Manual1 x FC to LC Adapter