The TP-Link TL-SM311LS is a 1000Base-LX Single-Mode Mini-GBIC SFP module engineered to extend network transmission distances over long-range fibre infrastructure. Featuring hot-pluggable flexibility, Digital Diagnostic Monitoring (DDM) support, and a reliable LC Duplex interface, this module ensures high-speed, stable Gigabit connectivity for enterprise switching environments.
Technical Specifications
- Model Number: TL-SM311LS
- Standards and Protocols: IEEE 802.3z, CSMA/CD, TCP/IP
- Interface / Port Type: 1x LC Duplex (LC/UPC)
- Data Rate: 1.25 Gbps (Gigabit Ethernet / 1000Base-LX)
- Wavelength: 1310 nm
- Fiber Type & Media: 9/125 μm Single-Mode Fibre (SMF)
- Max Cable Distance: Up to 20 km (approx. 12.4 miles)
- Power Supply: 3.3V
- Form Factor & Hardware Features: SFP (Small Form-Factor Pluggable), Hot-Swappable, DDM (Digital Diagnostic Monitoring)
- Operating Temperature: 0°C to 70°C
Key Features
- Long-Range Extension: Designed to bridge enterprise network segments across extended footprints, supporting single-mode fiber runs up to 20 km.
- Digital Diagnostic Monitoring (DDM): Built-in DDM functionality allows real-time tracking of module parameters such as optical output power, temperature, and transceiver supply voltage.
- High Operational Flexibility: Fully compliant with the Small Form Pluggable Multi-Source Agreement (SFP-MSA), supporting hot-swappable installation without needing to reboot active network switches.
- Robust Compliance: Built to meet IEEE 802.3z standards with strict FCC and CE safety/emission certifications.
