The SFP GLC-LX-SM-RGD transceivers are high performance, cost effective modules supporting dual data-rate of 1.25Gbps/1.0625Gbps and 20km transmission distance with SMF. The transceiver consists of three sections: a FP laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements. Features Dual data-rate of 1.25Gbps/1.063Gbps operation 1310nm FP laser and PIN photo detector for 20km transmission Compliant with SFP MSA and SFF-8472 with duplex LC receptacle Digital Diagnostic Monitoring Internal Calibration or External Calibration Compatible with SONET OC-24-LR-1 Compatible with RoHS +3.3V single power supply Operating case temperature: Standard : 0 to +70C Industrial : -40 to +85C Parameter Package (Form Factor) SFP Data Rate (typical) 1.25 Gb/s Centre Wavelength 1310nm Distance 20km Diagnostics Digital Monitor Transmitter Fabry-Perot Laser Receiver PIN photo detector TX Output Power (dBm) -9~-3 RX Sensitivity (dBm) -23 Low/High Case Temperature 0C~70C Voltage Supply (typical) 3.3v Connector Duplex LC/UPC .