GLSUN S1x4 Mechanical Optical Switches is as small as 26.5×21.5×10mm in dimension. S1x4 fiber optic switch is designed and manufactured to ensure high performance, low ion loss, wide wavelength range, high stability and high reliability for optical networking. Features: ·Low Insertion Loss ·Wide Wavelength Range ·Low Crosstalk ·High Stability, High Reliability ·Epoxy-free on Optical Path ·Latching and Non-latching Application ·R&D in Laboratory ·System Monitoring ·OADM ·MAN(Metropolitan Area Network) ·Network Security and Monitoring https://www.glsun.com/product-v212-s1x4-optical-switch.html