This listing is for a Mitsubishi A1S33B base unit chassis module in new, open-box condition. It serves as the foundational housing and connection point for building or expanding a programmable logic controller (PLC) system. As a core component, it is designed to securely mount and interface with compatible CPU and I/O modules. Free shipping is included. This module is a practical choice for technicians, engineers, or facilities performing system maintenance, upgrades, or custom automation panel builds. Because it is sold as new open box, it should provide reliable performance. Always check the listing for full details on compatibility and included accessories before purchasing. Mitsubishi A1S33B Base Unit Chassis Module. Condition: New – Open box. Listed at 155.10 USD. Model Number:A1S33B. Category:Chassis Modules. Gate Valves. Knife Gate Valves. Welding and Cutting. This item is sold by NRI Industrial Sales LLC and not the manufacturer. NRI is not authorized or affiliated with the manufacturer.