1G SFP are compatible with the Small Form Factor. This transceiver meets the Small Form Pluggable (SFP) industry standard package utilizing an integral LC-Duplex optical interface connector. An enhanced Digital Diagnostic Monitoring Interface compliant with SFF-8472 has been incorporated into the transceiver. Pluggable Multi-Sourcing Agreement (MSA). CWDM series are all available, distance up to 80KM.