The LCP-1250B4QDRT from Delta Electronics, Inc. is a Fiber Optic Transceiver with Data Rate 0.6144 to 1.2288 Gb/s, Wavelength 1274 to 1355 nm, Distance/Reach 2 to 10 km, Output Power -9.5 to -3 dBm, Receiver Sensitivity -19 dBm. More details for LCP-1250B4QDRT can be seen below.