TP-Link ISM321A-20 & ISM321B-20 1000Base-BX WDM Bi-Directional Industrial SFP Module
•	Supports WDM Bi-Directional technology, using a single strand of fibre, cost saving
•	Single mode SFP LC Transceiver
•	Hot-Pluggable with maximum flexibility
•	Supports Digital Diagnostic Monitoring (DDM)
•	Compatible with Small Form Pluggable Multi-Source Agreement (SFP-MSA)
•	Industrial Product Operating Temperature Range: -40-85°C 
Warranty Period: 3-Year

 
     
     
    