Siemens S7-300 PLC Digital Input Module 6ES7 321-1BL00-0AA0 Used

The Siemens 6ES7 321-1BL00-0AA0 digital input module is designed for SIMATIC S7-300 systems and provides 32 channels of 24V DC digital inputs. It is widely used in automation projects where digital signals from sensors and field devices must be monitored and processed.

This unit is used, but it has been technically tested, verified as fully working, and is ready to ship. It offers a reliable, cost-effective alternative—especially for urgent service and spare-part needs. Easy installation and compatible with S7-300 systems.

Condition & Benefits (EN)

✔️ Used, 100% working condition
✔️ Technically tested
✔️ Fast delivery from stock
✔️ 6-month company warranty

Product Code: 6ES7 321-1BL00-0AA0

For the new (unused) version of this product, click here.