Product Description
SIMATIC S7-400 Digital Input SM 421The SIMATIC S7-400 Digital Input SM 421 is an isolated 32-channel digital input module for the S7-400 series.
Key Features:- 32 isolated digital input channels- 24 V DC input voltage- Galvanic isolation for reliable operation- Compact design for space-saving installation
Key Specifications:- Input type: Digital- Number of channels: 32- Input voltage: 24 V DC- Isolation: Galvanic- Compatibility: S7-400 series