Number of Inputs:16

Input Voltage Range:20 – 125V DC

Current Consumption:1.5A

Signal Type:Process Interrupt

Isolation:Yes

Operating Temperature:-25°C to +60°C

Communication Interface:DI for S7-400

Diagnosis Function:Integrated diagnostics

    Unmatched Performance: The Siemens SIMATIC S7-300 Digital Input Module SM 421 boasts a robust design, ensuring reliable operation in harsh industrial conditions.

    Versatile Application: This module is designed for integration into a wide range of industrial automation systems, providing accurate input detection for process control, machine guarding, and more.

    Efficient Monitoring: With its high-speed response and stable performance, the SM 421 ensures that your production lines run smoothly without unexpected downtime.

    Ease of Installation: The compact size and straightforward connection options make it simple to integrate into existing systems, reducing setup time and costs.

    Quality Assurance: Manufactured by Siemens, a leading brand in industrial automation, this module comes with a commitment to quality and reliability, backed by comprehensive technical support.