NEW FACTORY SEALED
SIEMENS Simatic6ES7421-1BL01-0AA0 Digital Input SM 421
SIMATIC S7-400, digital input SM 421, isolated 32 DI; 24 V DC
Discover precision and reliability with the SIEMENS Simatic 6ES7421-1BL01-0AA0 Digital Input SM 421, now available NEW FACTORY SEALED at Aegean Automation. Designed for the SIMATIC S7-400 series, this digital input module features 32 isolated digital inputs at 24 V DC, ensuring robust performance for your industrial automation needs. We pride ourselves on delivering top-quality spare parts tailored to your specific requirements. Elevate your automation system with the trusted performance of Siemens and the exceptional service of Aegean Automation.
top of page
SKU: 662643186635
€275.00Price
Only 7 left in stock
• Ships within 24 hours
• Express shipping options available at checkout
• Worldwide shipping with UPS, DHL
• Secure payment with Paypal, Visa,Mastercard & Ideal
• 30-day warranty

SSL Secured Checkout
We supply industrial automation spare parts including PLCs, HMIs, CPUs, I/O modules, drives, sensors, and control components from leading brands such as Siemens, Beckhoff, Allen-Bradley, Omron, Schneider Electric, Eaton, and more. All parts are available from stock and ready for fast worldwide shipping. Aegean Automation is a trusted supplier of industrial automation components for production systems, machinery, and factory automation worldwide.
Related Products
bottom of page


















