The ALQ28-CW4-02 from 10Gtek Transceivers is a Fiber Optic Transceiver with Data Rate 100 Gb/s, Wavelength 1270 to 1610 nm (CWDM), Distance/Reach 2 km, Output Power -6.5 to 2.5 dBm, Receiver Sensitivity -10 to 2.5 dBm. More details for ALQ28-CW4-02 can be seen below.