Power MeterThe Fosco power meter is meant to meet the high demands of fiber optic testing. It can be used for the absolute power measurement and relative measurement of the link loss in dB. Its compact size, user friendly interface, broad power measurement range, high precision and user automatic calibration function makes it a high performance testing device ideal for network testing. Different style adapter caps included. Light SourceFosco light sources include a dual wavelength multi-mode or single mode light source. When used with the Fosco Power Meter, together they provide accurate test solutions for fiber optic networks. Interchangable adapters allow flexibity with reference cords. Zero Set Reference Storage Ability at Each Wavelength 10 minute Auto Shut Off 40-Hour Battery Life Battery Level Indicator Protective Carrying Case Convenient Backlight screen 3 Alkaline AA Batteries Download Product Specification