https://www.gearlinkoptic.com/products/sfp-155m-1550nm-80km-lc-transceiver/ GearLink's 100M SFP optical fibre transceiver GAS7L0C31 is a small pluggable transceiver module based on the SFP multi-source agreement (MSA). It works with optical fibers to provide a complete two-way data link connection for high-speed and transparent data transmission. Used in Ethernet or SDH/SONET, generally only used in 100M SFP interface. It is a 100M optical transceiver that meets the 100M Ethernet standard specified in the IEEE 802.3, and also meets SDH STM-1, SONET OC-3 SR1, Fast Ethernet, and other applications in 100M fiber-optic networks. The package of GAS7L0C31 is SFP with LC interface, the rate is 155M, the optical wavelength is 1310NM, and the maximum transmission distance is 80KM.