6ES7421-1BL01-0AA0 digital input module

The Siemens 6ES7421-1BL01-0AA0 digital input module (SM 421) is a part of the SIMATIC S7-400 series, designed for industrial automation systems to provide efficient input signal processing capabilities. This module is equipped with 32 isolated digital input channels, each supporting 24 V DC signals and featuring isolation to ensure signal stability and system immunity to interference. Its compact design and high-performance input functions make it an ideal choice for automation systems that require large-scale digital signal inputs.   hot selling   1 year warranty   Best choice and best discounts   Contact us:alice@cn2014.com