# Siemens 6ES5 421-8MA12 Digital Input Module - 24V DC

The **Siemens 6ES5 421-8MA12** Digital Input Module is a crucial component for industrial automation, designed to efficiently manage digital signals in demanding environments. This module, perfect for integrating with Simatic S5 systems, provides eight channels for 24V DC inputs, ensuring reliable performance in various industrial applications. Its robust design guarantees seamless connectivity and precise signal processing, making it a dependable choice for modern industrial processes.

This module is engineered for easy installation and compact integration, ensuring efficient use of space within your control systems. The **6ES5 421-8MA12** is made in Germany, reflecting Siemens' commitment to quality and durability. It provides a reliable solution for digital input processing, enhancing the efficiency of your industrial operations. This module is ideal for those upgrading existing systems or building new ones.

Key Features:

-   **Digital Input Channels:** Provides eight digital input channels for 24V DC signals.
-   **Robust Design:** Built for industrial environments, ensuring durability and reliability.
-   **Easy Installation:** Designed for quick and straightforward integration into existing systems.
-   **Precise Signal Processing:** Ensures accurate and efficient handling of digital inputs.
-   **Made in Germany:** Reflects Siemens' commitment to high-quality manufacturing standards.

Specifications:

-   Input Voltage: 24V DC
-   Number of Channels: 8
-   Weight: 680 grams
-   Compatibility: Siemens Simatic S5 systems

The **Siemens 6ES5 421-8MA12** Digital Input Module offers unparalleled reliability and performance, essential for maintaining the efficiency of your automation systems. Trust **Siemens** and Ram Automations for top-tier industrial components. For any inquiries, contact us at [info@ramautomations.com](mailto:info@ramautomations.com) to elevate your industrial processes.

## Details

- **Price:** 999.0 USD
- **Vendor:** Siemens
- **Type:** Industrial Automation > PLC Components > Input Modules
- **Tags:** 24V DC, 6ES5 421-8MA12, digital input module, industrial automation components, Siemens, Simatic S5

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Used | 999.00 USD | In stock |

## Images

- Siemens 6ES5 421-8MA12 Digital Input Module - 24V DC-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/siemens-6es5-421-8ma12-digital-module)
> Updated: 2026-10-03