Need More Details?
If you’d like to check stock availability, request the latest price, or view more product images, simply click the "Request for Price" button and our team will assist you promptly.

Enhance your industrial automation with the Siemens SIMATIC S7-1200 SB 1221 Digital Input Module 6ES7221-3BD30-0XB0. This high-speed 4DI module offers precise 24V DC signal acquisition up to 200 kHz, ideal for demanding machine control and motion applications. It seamlessly expands the capabilities of your Siemens S7-1200 PLC system for faster, more reliable automation processes.
The Siemens SIMATIC S7-1200 6ES7221-3BD30-0XB0 is engineered for exceptional performance in high-frequency automation tasks. Its compact design ensures easy integration directly with S7-1200 CPUs, providing robust control system expansion. This module is perfect for applications requiring accurate high-speed counting, rapid motion control, and efficient OEM equipment operation. If you need fast signal detection for complex automation, this Siemens module delivers.
Invest in the reliability and precision of Siemens automation components. The Siemens SIMATIC S7-1200 SB 1221 module 6ES7221-3BD30-0XB0 offers a dependable solution for your critical automation needs. Explore our range of Siemens products for your next project.
Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.