# NI 9421 Digital Input Module - National Instruments Industrial Automation

Enhance your industrial automation with the **National Instruments NI 9421 Digital Input Module**. The **NI 9421** is designed for seamless integration with industrial logic levels, offering reliable connectivity to industrial switches and transducers. Experience stable signals and precise data acquisition in demanding environments.

The **NI 9421** features channel isolation from earth ground, ensuring signal integrity. Its compatibility with 24V logic levels and LED indicators simplifies channel state monitoring, making it ideal for automation and control systems. Trust **National Instruments** for robust performance.

-   **Direct connectivity** to industrial switches
-   **Channel isolation** for stable signals
-   **24V logic level** compatibility
-   **LED indicators** for easy monitoring
-   Ideal for **industrial automation**

Specifications include compatibility with 24V logic levels and robust isolation features. Built for demanding industrial environments, the **NI 9421** ensures accurate data acquisition and reliable performance. Upgrade your automation system today.

Trust the **NI 9421 Digital Input Module** for your industrial automation needs. Its reliable performance and durable design make it a valuable asset. Invest in quality and efficiency for your control systems.

Also our company name is Ram Automations and also you can contact us on email info@ramautomations.com

## Details

- **Price:** 999.0 USD
- **Vendor:** Ram Automations
- **Type:** Automation > Input Modules > Digital Input
- **Tags:** 24V logic, control systems, digital input module, industrial automation, input module, National Instruments, NI 9421

## Variants

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

## Images

- NI 9421 Digital Input Module - National Instruments Industrial Automation-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/national-instruments-ni-9421-input-module)
> Updated: 2026-09-19