Photodyne Model 1950XR-100B Fiber Optic Continuous Optical Attenuator , 820/1300
The Photodyne Model 1950XR-100B is a continuous fiber optic attenuator with the following general specifications Wavelengths: 820 nm and 1300 nm. 0-70 dB at 820 nm. 0-60 dB at 1300 nm.