Fast Photonics 10G CWDM SFP+ transceiver is designed for 10 Gigabit wireless front-haul links up to 10km with single mode fiber. This module is operating at a nominal wavelength of CWDM wavelength, there are 18 center wavelengths available from 1270 nm to 1610 nm, with each step 20 nm.They are compliant with the SFF-8431,SFF-8432,10GFC and IEEE 802.3ae protocol.The optical transceiver is RoHS compliant.