JT-STM1-SFP-BD-IR Small Form Factor Pluggable (SFP) transceivers are compatible with the SFP Multi-Sourcing Agreement (MSA). They comply with SONET and SDH standards at OC-3 IR-1/STM S-1.1 and OC-3 SR/STM I-1, and are suitable for Fast Ethernet applications. Digital diagnostics functions are available via the 2-wire serial bus specified in the SFP MSA.  The optical transceiver is compliant per the RoHS Directive 2011/65/EU.