The QSFP-100G-ER4-D from 3Coptics is a Fiber Optic Transceiver with Data Rate 100 Gb/s, Wavelength 1294 to 1310 nm (LWDM, Distance/Reach 30 km, 40 km, Output Power 2.5 to 3.3 dBm, Receiver Sensitivity -15 dBm, -19 dBm. More details for QSFP-100G-ER4-D can be seen below.