SFP-7020-31 SFP module has a 1. 25Gbps (Gigabit) transmission rate. It is replacing the previous SFP-7010-31 model, which is now no longer available, being able to connect with old and new LX SFPs alike. The transceiver is able to work on 9/125um single-mode fiber for up to 20Km distance. The fiber. Extend your network with Teltonika's 1. THE IT PRO'S CHOICE: Designed and built for IT Professionals, this SFP module is backed for life (lifetime of module, not network switch), including free lifetime 24/5 multi-lingual technical assistance. This mini-GBIC (Gigabit Interface Converter) module provides a metal housing to reduce electromagnetic interference and increases durability. MSA-compliant for broad compatibility with major switch brands.