Allen-Bradley 1794-OA16 Flex I/O AC Output Module, 16 Channels By wayne No Comments on Allen-Bradley 1794-OA16 Flex I/O AC Output Module, 16 Channels 3 Min Read Buy the Allen-Bradley 1794-OA16 Flex I/O AC output module. It features 16 non-isolated channels with 74-132VAC range. Order now for fast shipping.