# National Instruments NI 9421 Digital Input Module 8-Ch 24V

Enhance your industrial automation with the versatile **National Instruments NI 9421** digital input module. This robust device is engineered for reliable data acquisition in demanding environments, providing a crucial link between your plant floor and control systems. Its 8 channels and 24V logic compatibility ensure seamless integration with a wide array of sensors and switches.

The **NI 9421** offers superior performance through its channel-to-earth ground isolation, effectively safeguarding your equipment from electrical noise and surges. This feature is essential for maintaining data integrity and ensuring the longevity of your automation infrastructure. For users seeking to understand operational status at a glance, each input channel is equipped with a clear LED indicator, simplifying monitoring and troubleshooting processes.

What makes the **National Instruments NI 9421** ideal for your automation needs? It offers dependable 24V logic input and robust isolation for industrial applications. This module is perfect for engineers and technicians who require accurate and safe signal acquisition in complex control systems. Upgrade your system with the trusted quality of National Instruments.

-   **8-Channel Digital Input** for comprehensive data collection
-   **24V Logic Compatibility** for broad industrial device support
-   **Channel-to-Earth Ground Isolation** for enhanced safety and reliability
-   **Integrated LED Indicators** for immediate status monitoring
-   Built with the trusted quality of **National Instruments**

## Details

- **Price:** 999.0 USD
- **Vendor:** Ram Automations
- **Type:** Industrial Automation > Data Acquisition > Digital I/O Modules
- **Tags:** 24V Logic, 8-Channel Input, Control Systems, Data Acquisition, Digital Input Module, Industrial Automation, National Instruments NI 9421, NI 9421 Module

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 999.00 USD | In stock |

## Images

- National Instruments NI 9421 Digital Input Module 8-Ch 24V-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/national-instruments-ni-9421-digital-input-module)
> Updated: 2026-10-05