The S2x-xAJx-211 from W-Optics Technology is a Fiber Optic Transceiver with Data Rate 1.25 Gb/s, Wavelength 1310 nm, 1550 nm, Distance/Reach 40 km, Output Power -6 to 2 dBm, Receiver Sensitivity -25 dBm. More details for S2x-xAJx-211 can be seen below.