SIEMENS 6ES7421-1BL01-0AA0 SIMATIC S7-400 SIMATIC S7-400, DIGITAL INPUT SM 421, ISOLATED 32 DI; 24 V DC

The **SIEMENS 6ES7421-1BL01-0AA0** is a **SIMATIC S7-400** Digital Input Signal Module, specifically the **SM 421** variant. This module provides **32 digital inputs**, each of which is **isolated** and operates at **24 V DC**.

Key features of the 6ES7421-1BL01-0AA0 SM 421 Digital Input Module:

- **Product Code:** 6ES7421-1BL01-0AA0
- **Product Line:** SIMATIC S7-400
- **Module Type:** Digital Input Signal Module (SM 421)
- **Input Type:** Digital
- **Inputs:** 32
- **Isolation:** Isolated inputs
- **Voltage:** 24 V DC
- **Functionality:** Provides 32 isolated digital inputs suitable for 24 V DC signals

This Digital Input Signal Module is designed to interface with the SIMATIC S7-400 system, offering 32 isolated digital inputs that can reliably handle signals at 24 V DC. With its isolation feature, this module ensures that the signals remain independent and protected from interference, making it suitable for various industrial automation applications where precise and secure digital input handling is required.