The OSW22-488-SM from Thorlabs Inc is a Fiber Optic Switch with Insertion Loss 2 dB, Operating Temperature 0 to 40 Degree C, Optical Power 30 mW, Polarization Dependent Loss 0.02 - 0.05 dB, Storage Temperature -40 to 70 Degree C. More details for OSW22-488-SM can be seen below.