Allen-Bradley 1794-IM8 Flex I/O 220V AC Digital Input Module By wayne No Comments on Allen-Bradley 1794-IM8 Flex I/O 220V AC Digital Input Module 2 Min Read Buy the Allen-Bradley 1794-IM8 Flex I/O 220V AC digital input module. This unit offers 8 nonisolated inputs for reliable 240V AC signal monitoring.