TP-Link TL-SM321A-2 1000Base-BX WDM Bi-Directional SFP Module, up to 2km Transmission Distance

Ensure reliable, high-performance gigabit fiber connectivity for short- and medium-distance deployments with the TP-Link TL-SM321A-2 1000Base-BX WDM Bi-Directional SFP Module. Built for IT and physical security professionals, this single-mode SFP supports up to 2 km over 9/125 µm fiber and uses an LC bi-directional interface to minimize fiber cabling while maintaining a full gigabit link. The module’s Digital Diagnostic Monitoring (DDM) compliant with SFF-8472 delivers real-time insights into optical power, current and temperature, helping network engineers and security integrators rapidly identify and resolve faults in surveillance, access control and monitoring networks. Hot-swappable and MSA-compliant, the TL-SM321A-2 drops into standard SFP slots for fast, low-risk upgrades across switches, routers and servers. Ideal for CCTV/surveillance backbones, remote monitoring stations and enterprise fiber segments, it combines operational simplicity with enterprise-grade reliability. Strengthen your network infrastructure and streamline maintenance—add the TP-Link TL-SM321A-2 to your security or networking setup today.

• Deliver reliable gigabit fiber links up to 2 km for short- and medium-range networks, reducing latency and downtime
• LC bi-directional WDM design saves fiber infrastructure by carrying transmit and receive over a single strand
• Built-in DDM (SFF-8472) provides real-time monitoring of optical power, temperature and diagnostics for faster troubleshooting
• Hot-swappable SFP form factor enables tool-free installation and minimal network disruption during upgrades
• MSA-compliant design ensures wide compatibility with switches, routers, servers and security/surveillance systems