Allen-Bradley 1771-OAD is a PLC-5 digital output module that provides 16 discrete AC outputs for PLC-5 I/O racks. Designed for 120 VAC operation (range roughly 10–138 VAC), it plugs into the PLC-5 backplane and is controlled by the CPU to switch outputs on and off. This single-slot module is part of the 1771 I/O family and adheres to the PLC-5 system’s addressing and wiring conventions. Use cases include switching line-voltage loads in industrial automation where AC outputs are required.
