The ALQ28-ER4-30 from 10Gtek Transceivers is a Fiber Optic Transceiver with Data Rate 100 Gb/s, Wavelength 1269 to 1332 nm (LWDM), Distance/Reach 30 km, Output Power -2.5 to 2.9 dBm, Receiver Sensitivity -20.5 to -3.5 dBm. More details for ALQ28-ER4-30 can be seen below.