1000BASE-LX, Small Form-factor Pluggable (SFP), 1310nm Transmitter Wavelength, LC Connector, Single-mode Fiber (SMF), Industrial Temperature Range, up to 10km reach
1000BASE-SX, Small Form-factor Pluggable (SFP), 850nm Transmitter Wavelength, Multi-mode Fiber (MMF), Industrial Temperature Range, Digital Diagnostics Function (DDM)