The ASF15-24-80-D from 10Gtek Transceivers is a Fiber Optic Transceiver with Data Rate 1.25 Gb/s, Wavelength 1550 nm, Distance/Reach 80 km, Output Power 0 to 4 dBm, Receiver Sensitivity -25 to -3 dBm. More details for ASF15-24-80-D can be seen below.