The Clear-Com HLI-SMFO is an Optional SFP transceiver for Clear-Com's HLI-FBS Fiber Linking Interface Module. This model is a Single-Mode version that enables a daisy-chain fiber interface to connect to other HelixNet main stations using single-mode or multi-mode transceivers.

One Single-Mode SFP LC duplex transceiver for the HelixNet HLI- FBS fiber module, FSII-BASE-II or FSII-SPL fiber splitter.

With Clear-Com HLI-SMFO Fiber Modules, stations share partyline channels and program audio, and make them available to any station and beltpack on the linked system. Clear-Com HLI-SMFO Fiber Modules can be mixed with Ethernet Modules in the same network. The HLI-FBS has two slots but comes with one single-mode transceiver fitted. The second slot can have an optional HLI-SMFO single-mode or HLI-MMFO multi-mode transceiber fitted before or after leaving the factory.