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SIEMENS S7-300 Source Input Module, 6ES7321-1BH50-0AA0
The SIEMENS S7-300 Source Input Module, model 6ES7321-1BH50-0AA0, is designed for high-performance industrial control systems. This module provides 16 digital inputs, optically isolated, for 24V DC power supply, enabling reliable signal acquisition in harsh industrial environments.