Allen-Bradley 1794-IE8H Flex I/O HART Analog Input Module By wayne No Comments on Allen-Bradley 1794-IE8H Flex I/O HART Analog Input Module 3 Min Read Buy the Allen-Bradley 1794-IE8H Flex I/O HART module. This 8-channel analog input offers 16-bit resolution and supports 0-20 mA signals. Shop now.