Sieb & Meyer K256961,CSS90 Printed Circuit Board

Sieb & Meyer CSS90 Station I/O Board, part K256961 (43.01.05.2), is a used printed circuit board that serves as the Station I/O module within the CSS90 control family. Identified as CSS90 Station I/O Board 43.01.05.2, L930511V, it appears in listings as a Sieb & Meyer CSS90 component offered as used stock for maintenance and repair of existing installations. The board functions as the interface for external signals within a CSS90 system, supporting the input/output subsystem that connects sensors, actuators, and other peripherals to the CSS90 controller. Buyers typically seek this specific part for replacement or refurbishment of CSS90 stations, using the K256961 designation to confirm compatibility with Station I/O configurations documented in contemporary listings. Availability is shown across marketplaces and refurbishing vendors, underscoring its role as a practical spare part for Sieb & Meyer CSS90 setups.