Edit Product Description Save and continue editing Save changes Sku LS Description TP-Link 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: -40-85C Warranty Period: 3-Year Alloy Description Alloy Short Description Alloy Features & Benefits MMT Description DS Description DS Features HTML Icecat Description Icecat Short Description Icecat Features Icecat Specifications Icecat Middle Description Icecat Long Summary Are you sure you want to %action_name%?