The MSW-1X13-1240-1640 from Optosun technology is a Fiber Optic Switch with Insertion Loss 2.0 (Typ 1.3) dB, Operating Temperature 0 to 70 Degree C, Optical Power Typ. 150 mW, Polarization Dependent Loss 0.15 dB, Storage Temperature -40 to 85 Degree C. More details for MSW-1X13-1240-1640 can be seen below.