Allen-Bradley 1794-IA16 Flex I/O 16-Point AC Input Module By wayne No Comments on Allen-Bradley 1794-IA16 Flex I/O 16-Point AC Input Module 2 Min Read Procure the Allen-Bradley 1794-IA16, a 16-point non-isolated AC input module for Flex I/O systems. It accepts 74-132VAC signals.