Feature:1. VFL Red Light Pen: This red light pen is specially designed for the design and maintenance of fiber optic cables and lines to locate defects on cables and cables.2. Non Contact Connection: This connection is non destructive to the fiber and the end face of the transmitter, and the output power is not affected by voltage fluctuations.3. Stable Output: The fiber optic pen has stable output power, the output distance is 50km, which is a good tool for fiber testing.4. Small and Portable: The fiber optic pen is small in size, light in weight, energy saving, and easy to carry for outdoor work.5. Aluminum Alloy: The aluminum alloy shell of the positioner is corrosion resistant, rust proof, and resistant to falling and wear, providing a long service life for the positioner.Specification:Item Type: VFL Red Light PenMaterial: Aluminum alloyOutput Power: >50MWOutput Distance: 50KMOutput Wavelength: 65010nmOperating Temperature: 0-60Storage Temperature: -20-70Battery Type: 2 x 1.5V AA batteries (shipped without batteries)Color: Black.Package List:1 x VFL Red Light Pen1 x Pen Bag1 x Lanyard1 x Ceramic Core1 x Instruction1 x FC to LC Converter