Description 1000Base-BX WDM Bi-Directional SFP Module What This Product Does The TL-SM311 series Fiber Module Cards are introduced to extend transferring distance. Installed in our managed/smart switches, they can extend the distance to even tens of kilometers, which satisfies the distance requirement of LAN. Users can choose the fiber modules according to specific demands. Features Features Up to 20 km transmission distance in 9/125 μm SMF (Single-Mode Fiber) Supports Digital Diagnostic Monitoring (DDM) Compatible with Small Form Pluggable Multi-Source Agreement (SFP-MSA) Hot-Pluggable with maximum flexibility Commercial Product Operating Temperature Range: 0-70°C Specifications TL-SM311LS Installation Guide HARDWARE FEATURES DDM Yes SFP-MSA Yes Hot Swappable Yes MEDIA CONVERTER & MODULES Standards and Protocols IEEE 802.3z Wavelength 1310 nm Power Supply 3.3 v Safety & Emission FCC, CE Cable Single-Mode Fiber Fiber Type 9/125 μm Single-Mode Max. Cable Length 20 km Data Rate 1.25 Gbps Port Type LC Duplex Environment Operating Temperature: 0–70 °C (32–158 °F)Storage Temperature: -40–85 °C ( -40–185 °F)Operating Humidity: 10–90% RH, Non-CondensingStorage Humidity: 5–90% RH, Non-Condensing What's in the box What's in the box Package includes Qty 1 - SFP Module TL-SM311LS Qty 1 - Installation Guide