The Fiber to Serial / Fiber to Ethernet solutions from KSH bridge industrial fiber optics with legacy and modern networking protocols—creating resilient links between fiber infrastructure and RS-232/422/485 serial interfaces, or converting fiber to Ethernet. These converters support both single-mode and multi-mode fiber, enabling long-distance, high-integrity data transmission in challenging environments. Use cases include factory automation, building management, SCADA, traffic control, and remote monitoring, where electromagnetic interference or harsh conditions make copper-based data links unreliable. Rugged, dependable and scalable, these devices ensure that both serial-based equipment and Ethernet-based networks can integrate seamlessly into fiber backbone systems without sacrificing performance or compatibility.