D-Link DEM-220T SFP 100BASE-BX-D BiDi Single-Fiber Fast Ethernet Optical Transceiver

Basic Parameter Table

Core Product Features

1. D-Link long-distance bidirectional single-fiber 100M fast Ethernet SFP module, only one single-mode fiber core completes transmit & receive, halves fiber core consumption.
2. Matching rule: This TX1550/RX1310 module must pair with DEM-220R (TX1310/RX1550, 100BASE-BX-U) to realize full-duplex bidirectional communication.
3. Complies with 100BASE-BX WDM BiDi standard, stable 20km transmission over standard single-mode fiber, suitable for cross-town monitoring and branch networking with insufficient spare fiber cores.
4. Hot-swappable plug-and-play design, compatible with all D-Link SFP switches supporting 100M fiber; no equipment power-off required during replacement for easy maintenance.
5. Moderate optical power budget, strong anti-fiber attenuation and anti-electromagnetic interference capability, supports 24/7 uninterrupted long-term outdoor unattended monitoring operation.
6. Cost-effective long-distance single-fiber BiDi solution, ideal for security monitoring projects lacking spare fiber cores.

Typical Application Scenarios

1. Point-to-point interconnection with limited single fiber cores: cross-town campus monitoring, remote factory workshop camera backhaul within 20km single-mode fiber range.
2. Old network renovation for small branch stores, 100M fast Ethernet private line access when only one spare single fiber is available.
3. Not applicable for multi-mode fiber; must be matched with opposite wavelength BiDi module for normal communication.