Siemens SIMATIC Digital Electronic Module 6ES7131-4BD01-0AA0

The Siemens 6ES7131-4BD01-0AA0 is a digital input module designed for the SIMATIC ET 200S distributed I/O system. It features 4 channels of 24V DC standard digital inputs, supporting binary control signals from sensors or switches. With a compact design (15 mm width), it integrates into high-density industrial control cabinets and offers robust performance in harsh environments (−25°C to +60°C). The module includes reverse polarity protection, 500V DC isolation, and low power consumption (0.7 W typical). Packaged in sets of 5 units, it simplifies inventory management for large-scale automation deployments.