The Fixed Buildout Optical Attenuator from Ascentta, Inc. is a Fiber Optic Attenuator with Attenuation 3 to 25 dB, Return Loss 40 to 60 dB, Attenuation Tolerance ±0.5 dB, ±0.7 dB, ±1 dB, ±1.3 dB, ±1.5 dB, Operating Wavelength 1240 to 1620 nm. More details for Fixed Buildout Optical Attenuator can be seen below.