The PFA-XX-1300-9/125-3-1-S-5 from OZ Optics Ltd. is a Fiber Optic Attenuator with Wavelength Dependent Loss ±0.1 dB, Attenuation 5 dB, Return Loss >50 dB, Attenuation Tolerance ±0.5 dB, ±0.7 dB, ±1 dB, Operating Wavelength 1300 nm. More details for PFA-XX-1300-9/125-3-1-S-5 can be seen below.