Feature:1. MAIN FUNCTION: Fiber visual fault locator, specially used to locate the defects on optical fiber cables and visually search for fiber breakage and usage.2. LESS INTERFERENCE: Non contact connection, lossless optical fiber and transmitter end surface, output power is not affected by voltage fluctuation.3. WORKING RANGE: The output wavelength range of the test pen is 65010nm, the output distance is 50KM, and the application range is wide.4. PORTABLE DESIGN: The optical fiber tester is compact, easy to carry, and ensures stable output power, is a practical tool for optical fiber testing.5. ALUMINUM ALLOY: The shell of the visual fault locator is made of aluminum alloy, light in weight, wear and corrosion resistant, sturdy and durable.Specification:Item Type: Optical Fiber Tester PenModel: AUA H50Material: Aluminum AlloyOutput Power: >50MWOutput Distance: 50KMOutput Wavelength: 65010nmOperating Temperature: 0-60Storage Temperature: - 20-70Battery Type: 2 x 1.5V AA battery (not included battery).Package List:1 x Tester Pen1 x Pen Bag1 x Hanging Rope1 x Ceramic Core1 x User Manual1 x FC to LC Adapter