The LCP-1250A4FSRx from Delta Electronics, Inc. is a Fiber Optic Transceiver with Data Rate 1000 Gb/s, Wavelength 850 nm, Distance/Reach 0.55 km(550 m), Output Power -9.5 to -4 dBm, Receiver Sensitivity -17 dBm. More details for LCP-1250A4FSRx can be seen below.