The ASF13-24-20-D from 10Gtek Transceivers is a Fiber Optic Transceiver with Data Rate 1.25 Gb/s, Wavelength 1310 nm, Distance/Reach 20 km, Output Power -9 to -3 dBm, Receiver Sensitivity -22 to -3 dBm. More details for ASF13-24-20-D can be seen below.