SIEMENS 6ES7321-1FH00-0AA0 SIMATIC S7-300, digital input SM 321, isolated 16 DI, 120/230 V AC, 1x 20-pole

SIEMENS 6ES7321-1FH00-0AA0 SIMATIC S7-300, DIGITAL INPUT SM 321, ISOLATED 16 DI, 120/230 V AC, 1X 20-POLE

The **SIEMENS 6ES7321-1FH00-0AA0 SIMATIC S7-300 SM321** module is a Digital Input module designed for the SIMATIC S7-300 series. This module, SM321, features 16 isolated digital inputs that can work with either 120V or 230V AC. It comes with a 20-pole connector for convenient wiring and integration into the control system.

Digital Input modules like the SM321 play a critical role in industrial automation, enabling the control system to receive digital signals from external devices or sensors. The isolation capability of this module helps protect against electrical noise and interference, ensuring accurate and reliable signal processing in industrial environments where stability is paramount.