The S2x-xAFx-211 from W-Optics Technology is a Fiber Optic Transceiver with Data Rate 1.25 Gb/s, Wavelength 1310 nm, 1490 nm, Distance/Reach 10 km, Output Power -9 to -3 dBm, Receiver Sensitivity -19 dBm. More details for S2x-xAFx-211 can be seen below.