1250M 20km Compact SFP 1490nm DFB H3C SFP-GE-LX-SM1490-BIDI Compatible 1000BASE-BX-D 1490nm-TX/1310nm-RX DOM 1.25Gb/s Compact Optical Transceiver Module
HTCSF-B1G4931LC
1250M 20km Compact SFP 1490nm DFB Feature
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