AOBO 3002/3003 series of Industrial Ethernet Switches support 1 Fast Ethernet optical port, 1 or 2 Fast Ethernet electrical interfaces. The users may select the proper fiber interface type and transmission distance of the optical interface based on the actual demands at the industrial application site. AOBO 3002/3003 switch supports the extra wide voltage input scope and provides the redundant access of the dual power. This series of switches are specially developed for the adverse industrial environment and adopt the solid aluminum alloy shell, fanless design and low power consumption, therefore being capable of operating stably under the industrial environment temperature of -40℃~+85℃. The product complies with the Level IV industrial EMC and thunder-strike prevention standard and is widely applied in the wind field communication, highway, metro, electricity, intelligent traffic and automatic communication of the plant.