**********LC to LC, Duplex*****SMF(9/125m)*****Polish: UPC/PC*****Low Smoke Zero Halogen (LSZH) *****OS1 and OS2 are standard single-mode optical fiber used with wavelengths 1310 nm and 1550 nm (size 9/125 m) with a maximum attenuation of 1 dB/km (OS1) and 0.4 dB/km (OS2). OS1 is defined in ISO/IEC 11801 and OS2 is defined in ISO/IEC 24702.