When the network calls for stable long-distance transport at Fast Ethernet speeds, the Hanwha Vision SFP-FLCS220 delivers a focused optical path. This single-mode SFP module supports 100 Mbps operation at 1310 nm and reaches up to 20 km, making it suitable for legacy infrastructure, remote links, and controlled fiber deployments where consistency matters. Its LC, 2-fiber design aligns with common single-mode patching practices and helps keep installation straightforward in switch and media-conversion environments. MSA compliance supports interoperability expectations in standardized hardware stacks, which is important when you need predictable behavior across mixed vendor networks. This module is a strong fit when you need to preserve existing fiber investments without overbuying capacity you will not use. For procurement teams and infrastructure engineers, it offers the right balance of reach, compatibility, and optical discipline for long-run Fast Ethernet links.