... Converter is used for real-time, high-resolution, long-distance and non-distorted transmission of 4-channel video signals in one-core fiber ... 3-level surge protection design for High voltage, Low voltage, and static;7. Power supply with AC 220V, DC-48V, 24V, ... 10. Specially designed matching circuit of optical module, with low heat emission;11. With TDM, ADM, and CWDM techniques, especially applicable ...