The Allen-Bradley 1771-A2B is an 8-slot PLC-5 I/O chassis designed for back-panel mounting, providing a compact housing for 1771 I/O modules in PLC-5 control systems. As part of the PLC-5 family, this universal I/O chassis accepts standard 1771 I/O modules and is intended for back-panel installation in industrial enclosures. This 1771-A2B chassis assembly uses eight slots in a back-panel-mount configuration to support modular I/O in PLC-5 installations.
