Allen-Bradley 1794-IC16 Flex I/O Module: 16 Sinking Inputs By wayne No Comments on Allen-Bradley 1794-IC16 Flex I/O Module: 16 Sinking Inputs 3 Min Read Procure the Allen-Bradley 1794-IC16 Flex I/O module with 16 nonisolated sinking inputs. It operates at 30-60V DC and offers high isolation.