Function: 1. COMPACT AND PORTABLE: Come with small size, light weight, energy saving, easy do carry with stable output power, which is a good do fiber testing tool 2. DIFFERENT APPLICATION: Visual damage detector Pen is a device specially designed do maintenance of fiber optic lines, used do locate cable damage, visually search for breaks we fibers and damaged cables in use 3. NO IMPACT: contactless connection, lossless fiber and emitter face, voltage fluctuations do not affect the output power 4. TECHNICAL PARAMETERS: Adopt aluminum alloy material, scratch resistant, output wavelength for 650nm 10nm, output optical power> 50MW, output distance is 50KM 5. WITH EQUIPMENT: Equipped with pencil case, lanyard, ceramic core, FC LC connector, easy to install and use, complete akcesoria guarantee convenient operation Specification: Item Type: Visual Damage Locator Pen Material: Aluminum Alloy Output Power: >50MW Output distance: 50 km Output wavelength: 650nm 10nm Operating temperature: 0- 60 Storage temperature: -20- 70 Colour yellow List of packages: 1 x Visual Damage Locator 1 x Pencil Case 1 x Lanyard 1 x Ceramic Core 1 x User Manual 1 x FC LC connector