The ST Plug Type Fixed Attenuator from JPT Electronics is a Fiber Optic Attenuator with Attenuation 1 to 20 dB, Operating Temperature -20 to 70 Degree C, Polarization Dependent Loss 0.5 dB, Return Loss 50 dB, Storage Temperature -40 to 80 Degree C. More details for ST Plug Type Fixed Attenuator can be seen below.