The ABL34-24-40-D from 10Gtek Transceivers is a Fiber Optic Transceiver with Data Rate 1.25 Gb/s, Wavelength 1310 nm, 1490 nm, Distance/Reach 40 km, Output Power -3 to 2 dBm, Receiver Sensitivity -23 to -3 dBm. More details for ABL34-24-40-D can be seen below.