Industrial SEA M4012 IO Expansion Module Card

SEA M4012 IO Expansion Module Card is a 24-input, 24-output digital I/O expansion for SeaI/O base controllers in the M-Series family. It communicates with the host via RS-485 Modbus RTU and is designed to extend I/O capacity in industrial automation networks. In typical SeaI/O configurations, a base unit can support a large number of expansion modules (up to 246) connected through RS-485 interconnects, with local power provided by the base for nearby modules and remote expansions requiring separate power. The M4012 functions as a PLC-style expansion that adds substantial digital I/O points for sensing and control tasks, making it suitable for machine automation, process monitoring, and distributed I/O applications within SeaI/O ecosystems.