Coherent FTLX2471DC027 Fiber Optic Transmitters, Receivers, Transceivers CWDM 1310nm DFB, PIN, 10GBASE-LR compatible, 9.95-10.3Gb/s transceiver, RoHS compliant, single mode, pluggable SFP+ footprint, 3.3V, LC connector, digital diagnostics, -5/70 C operation, 10km, 4 channels (1271/ 1291/ 1311/ 1331nm)