Allen-Bradley 1746-IA16 is a 16-point AC input module for the SLC 500 family, designed to monitor sixteen discrete 120 VAC signals in a single chassis. It mounts in a 1746 I/O rack and provides isolation between input circuits and the backplane to protect the controller from electrical noise and fault conditions. The module supports 16 channels of 120 VAC input (with per-channel status indicators) and is available in variants including the 1746-IA16-SERC Series C edition for the SLC 500 system. This makes it a common choice for reading digital sensors, such as pushbuttons and limit switches, across industrial machinery.
