Spotlight:
- WDM Bi-Directional SFP Module
- Supports WDM Bi-Directional technology, using a single strand of fiber, cost saving

TP-LINK´s TL-SM321A adopts the latest standard 1000Base-BX, transmission over a single strand of fiber, with one different wavelength going in each direction. You can extend the network distance up to 10Km with TP-LINK´s Routers, Switches, Media Converters to provide high speed and stability.

- Supports WDM Bi-Directional technology, using a single strand of fiber
- TX: 1550nm / RX: 1310nm
- Internal +3.3V Power Supply
- In pairs with TL-SM321B
- Plug-and-Play
- Suitable: MC220L, TL-R4199G/4299G, TL-SG3109, TL-SL3428/3452, TL-SG2109WEB/2216WEB/2224WEB,TL-SL2210WEB/2218WEB/2428WEB/2452WEB, TL-SL1351 and the other equivalent devices