The SW1x4-9N from Sercalo Microtechnology is a Fiber Optic Switch with Insertion Loss 1.0 - 1.5 dB, Operating Temperature 0 to 70 Degree C, Optical Power 10 - 50 mW, Polarization Dependent Loss 0.12 dB, Storage Temperature -40 to 85 Degree C. More details for SW1x4-9N can be seen below.