Optcore's OPB155-54A5xCR is a small form factor pluggable (SFP) bi-directional (BiDi) transceiver module for ultra long reach duplex optical data communications such as Fast Ethernet and 155Mbps SDH STM-1/SONET OC-3. CONQUER DISTANCE: 80km Long-Range Transmission Power Subheading Focus: Transmission Distance & Wavelength Distance limits many networks. Standard modules fail over long runs. Our 10G. In modern fiber-optical networks, a 1550nm optical transceiver plays a vital role by converting electrical data into invisible light, sending it across single-mode fibers over long distances, and then restoring it back into electrical form. Go to the Compliance Center for specific certifications. REACH is a European Union regulation concerning the Registration, Evaluation, Authorization and Restriction of Chemicals. It came into force on 1st. SFP-10G-ER 1550nm 40km DDM Optical Transceiver Module CISCO, HUAWEI, H3C, Juniper, D-link, HP, IBM, dell, Mikrotik, Aruba,Quidway Compatible This 10GBase-LR 1550nm SFP+ transceiver is designed to transmit and receive optical data over single mode optical fiber for link length of 20/40/60km. Good quality 155Mbps BiDi SFP Transceiver Module (SMF, 1550nm-TX/1490nm-RX, 150km, LC).