... 20km, 40km, 80km, 120km are available wavelength: 850nm, 1310nm, 1550n 1.25Gbps SFP Optical Transceiver, 40km Reach FeaturesDual data-rate of ... 1.25Gbps/1.063Gbps operation1310nm FP laser and PIN photodetector for 20km ... , High Quality with CE,RoHs,FCC,ISO certificate. 1.25G 1000BASE-LH SFP 1310nm 40km SFP fiber transceiver module 100% cisco ...