The E2000 Female to Female Fiber Attenuator from Teleweaver is a Fiber Optic Attenuator with Attenuation 1 to 30 dB, Insertion Loss 1, Operating Temperature -40 to 75 Degree C, Polarization Dependent Loss 0.1 dB, Return Loss 50 dB. More details for E2000 Female to Female Fiber Attenuator can be seen below.