Allen-Bradley 1794-IT8 Flex I/O Thermocouple Input Module By wayne No Comments on Allen-Bradley 1794-IT8 Flex I/O Thermocouple Input Module 2 Min Read Buy the Allen-Bradley 1794-IT8 Flex I/O thermocouple input module. This 8-channel unit handles J, K, T, and B sensors with 16-bit resolution.