TP-LINK TL-SM311LS optical module LC single-mode SFP dual-fiber 1000Base-LX 20KM

Brand: TP-LINK
Model: TL-SM311LS

Use hot-swappable SFP package Full-duplex optical transceiver module Complies with SFP MSA, IEEE 802.3z standards Up to 1.25Gbps Single-mode fiber transmission, up to 20KM Dual-fiber LC optical port, working wavelength 1310nm Built-in digital diagnosis function Working voltage 3.3V Shell working temperature 0℃ ~ 70℃ TL-SM311LS is the latest Gigabit single-mode dual-fiber SFP optical module launched by TP-LINK. Selected high-quality optical devices with superior performance provide high-performance, low-cost solutions for the growing demand for optical fiber transmission at home and abroad. The TL-SM311LS conforms to the SFP MSA protocol and adopts a hot-swappable standard SFP package. It is easy to use and has a wide range of applications. TL-SM311LS conforms to the IEEE 802.3z Gigabit

Product Features


  • Use hot-swappable SFP package
  • Full-duplex optical transceiver module
  • Complies with SFP MSA, IEEE 802.3z standards
  • Up to 1.25Gbps
  • Single-mode fiber transmission, up to 20KM
  • Dual-fiber LC optical port, working wavelength 1310nm
  • Built-in digital diagnosis function
  • Working voltage 3.3V
  • Shell working temperature 0℃ ~ 70℃

TL-SM311LS is the latest Gigabit single-mode dual-fiber SFP optical module launched by TP-LINK. Selected high-quality optical devices with superior performance provide high-performance, low-cost solutions for the growing demand for optical fiber transmission at home and abroad.

The TL-SM311LS conforms to the SFP MSA protocol and adopts a hot-swappable standard SFP package. It is easy to use and has a wide range of applications.

TL-SM311LS conforms to the IEEE 802.3z Gigabit Ethernet standard, with a rate of up to 1.25Gbps, transmitted through a pair of single-mode optical fibers, and the longest distance can reach 20KM.


Technical Specifications

Property DescriptionProperty Value
Supported standardsIEEE 802.3z
Transmission mediumSingle mode fiber
Transmission distance20KM
Transmission rate1.25Gbps
Port typeDual Fiber LC
Working wavelength1310nm
Operating Voltage3.3V
Working temperature of housing0°C ~ 70°C
Light parameterAverage transmit optical power: -9 ~ -3dBm Receive sensitivity: -21dBm