Siemens TI 505-4208A Digital Input Module, 8-point, is a discrete input card designed for TI 505 PLC systems, providing eight 110 VAC inputs with a nominal range of 79–132 VAC. The module is specified as floating inputs with an enhanced noise filter, which helps maintain reliable signal integrity in electrically noisy industrial environments. It serves to convert external switch states or sensor signals into TI 505–compatible logic, enabling accurate monitoring and control of machinery within TI 505 automation applications, and it is compatible with TI505 controllers in the 525–565 series (TI 505 I/O family).
