The S2x-xFFx-x11 from W-Optics Technology is a Fiber Optic Transceiver with Data Rate 10 Gb/s, Wavelength 1270 nm, 1330 nm, Distance/Reach 10 km, Output Power -8.2 to 0.5 dBm, Receiver Sensitivity -14.4 dBm. More details for S2x-xFFx-x11 can be seen below.