Detailed Product Description 155m bi-di transceiver Description: The 1.25G SFP optical module is ... SFP module,1.25G,LC connector, wavelength 1310nm,single mode 10Km BD-SFP-GL13-20 1000Base-LX SFP module ... ,1.25G,LC connector, wavelength 1310nm,single mode 20Km BD-SFP-GL15-40 1000Base-LX SFP module ... ,1.25G,LC connector, wavelength 1550nm,single mode 40Km BD-SFP-GL15-60 1000Base-ZX SFP module ...