TP-LINK´s TL-SM321B 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(6.2 miles) with TP-LINK´s Routers, Switches, Media Converters to provide high speed and stability.

TP-Link TL-SM321B. SFP transceiver type: Fiber optic, Maximum data transfer rate: 1250 Mbit/s, Interface type: SFP. Product color: Metallic. Compliance certificates: RoHS, Certification: FCC, CE. Width: 2.18" (55.4 mm), Depth: 0.575" (14.6 mm), Height: 0.508" (12.9 mm). Quantity per pack: 1 pc(s)

SFP transceiver type	Fiber optic
Maximum data transfer rate	1250 Mbit/s
Interface type	SFP
Single-mode fiber (SMF) supported	Yes
Multi-mode fiber (MMF) supported	No
Fiber optic connector	LC
Fiber cable diameters supported (core/cladding)	9/125 µm
SFP transceiver standard	BX
Maximum transfer distance	39370.1" (1000 m)
Tx wavelength (max)	1310 nm
Rx wavelength (max)	1550 nm
Networking standards	IEEE 802.3z
Wavelength-division multiplexing (WDM)	Yes
Product color	Metallic
Compliance certificates	RoHS
Certification	FCC, CE
Operating temperature (T-T)	0 - 70 °C
Storage temperature (T-T)	-40 - 80 °C
Operating relative humidity (H-H)	10 - 90%
Storage relative humidity (H-H)	5 - 90%
Width	2.18" (55.4 mm)
Depth	0.575" (14.6 mm)
Height	0.508" (12.9 mm)
Quantity per pack	1 pc(s)
User guide	Yes
Package width	3.21" (81.5 mm)
Package depth	4.82" (122.5 mm)
Package height	1.52" (38.5 mm)
Package weight	2.12 oz (60 g)
Harmonized System (HS) code	85369010