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Figure 2: FC503 and FC506 Parts: Internal view
Hooks to secure the cover on the panel (2)
Panel anchor screw locations (Top) (2)
Terminals (2) for the earth connection wires
Panel anchor screw locations (Bottom) (2)
Screws to secure main board (4)
Location for 2 batteries 12V, 17Ah
Power cable for main module
Switching power supply (See Figure 4)
Screws to secure chassis (2)
Main Module (See Figure 3)
Serial port RS 232 (PC link)