TP-Link TL-SM311LS Gigabit Single-Mode SFP Transceiver Module
The TL-SM311LS is a MiniGBIC form-factor SFP module designed to extend Gigabit Ethernet distances over single-mode fiber — critical when wiring security and automation infrastructure across large facilities, campuses, or warehouse perimeters where copper runs exceed practical limits.
Overview
This 1000Base-LX transceiver supports distances up to 10 kilometers, enabling you to deploy IP cameras, NVRs, and network access control systems at remote locations without intermediate active equipment. Single-mode fiber tolerates longer runs and environmental stress better than multimode, making it the standard choice for permanent outdoor backbone links in industrial and enterprise surveillance networks.
Compatibility
The TL-SM311LS works with any TP-Link switch or network device featuring an SFP slot rated for Gigabit Ethernet. Verify your switch documentation to confirm SFP slot support; many managed and unmanaged TP-Link Gigabit switches include at least one or two SFP uplink slots. The LC duplex connector mates with standard single-mode fiber patch panels and pre-terminated cable assemblies.
Installation Considerations
Single-mode fiber requires careful handling during termination — dust on LC connectors degrades signal. Use only graded single-mode fiber (ITU-T G.652 or equivalent) to achieve the rated 10km distance. Short runs under 2 kilometers may work on multimode fiber, but performance is not guaranteed. Test insertion loss and return loss after installation to confirm link integrity. The module operates over a standard temperature range suitable for indoor and outdoor enclosures with environmental protection.
