Allen-Bradley 1794-OA8 Flex I/O 120V AC Digital Output Module By wayne No Comments on Allen-Bradley 1794-OA8 Flex I/O 120V AC Digital Output Module 3 Min Read Buy the Allen-Bradley 1794-OA8 Flex I/O 120V AC digital output module. It features 8 non-isolated outputs and diagnostic capabilities for reduced downtime.