Finisar FWLF1621P2Txx CWDM Small Form Factor Pluggable (SFP) ZX CWDM SFP transceivers are designed for operation in Metro Access Rings and Point-to-Point networks using SONET, Gigabit Ethernet and Fibre Channel networking equipment in environments where temperatures are not controlled. CWDM 80km 2.67G SFP is available in eight different CWDM wavelengths and comply with ITU CWDM standard. Digital diagnostics functions can be accessed via an I2C serial bus. In addition,1550nm 2.67G CWDM Optical Transceivers comply with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA) are RoHS and lead-free compliant per Directive 2011/65/EU and Finisar Application Note AN-2038.