TP-Link Omada SM321B-2 1000Base-BX WDM Bi-Directional SFP Module
Supports 1000BASE-BX standard.
Transmission distance up to 2 km over single-mode fiber.
Complies with SFP-MSA standards.
Supports Digital Diagnostic Monitoring (DDM).
Hot-swappable design.
| Standards and Protocols | IEEE 802.3z, TCP/IP |
| Wave Length | • Tx: 1310 nm • Rx: 1550 nm |
| Dimensions (W × D × H) | 2.2 × 0.6 × 0.5 in (55.4 × 14.6 × 12.9 mm) |
| Power Supply | 3.3V |
| Safety & Emission | FCC, CE |
| Cable | Single-Mode Fiber |
| Fiber Type | 9/125 μm Single-Mode |
| Max. Cable Length | 2 KM |
| Data Rate | 1.25 Gbps |
| Port Type | LC Simplex |
| Hardware Features | • DDM • SFP-MSA • Hot Swappable |
| Package Content | • SM321B-2 • Installation Guide |
| Environment | • Operating Temperature: 0–70 °C (32–158 °F) • Storage Temperature: -40–85 °C (-40–185 °F) • Operating Humidity: 10–90% RH, Non-Condensing • Storage Humidity: 5–90% RH, Non-Condensing |







