SFP-10G55-ZR Compatible 10G SFP+ ZR supports a data rate of 10Gbps and 80km transmission distance with SMF. The transceiver consists of three sections: a Cooled EML laser transmitter, an APD photodiode integrated with a trans-impedance preamplifier (TIA), and the MCU control unit. All modules satisfy class I laser safety requirements. The transceivers are compatible with SFP Multi-Source Agreement and SFF-8472 digital diagnostics functions.