Allen-Bradley 1746-NI16I SLC 500 Analog Input Module By wayne No Comments on Allen-Bradley 1746-NI16I SLC 500 Analog Input Module 3 Min Read Buy the Allen-Bradley 1746-NI16I SLC 500 analog input module with 16-bit resolution and 16 channels. This module handles 0 to 20 mA signals for precise monitoring.