Siemens Logo! DM8 24R Expansion module, 24VDCProduct Overview The LOGO! DM8 24R expansion module is a versatile digital I O module designed to extend the capabilities of LOGO! 8 logic controllers. This module provides four digital inputs with AC DC NPN compatibility and four relay outputs in a compact 2 MW (36 mm) width design, enabling flexible expansion for industrial automation, building control, and process monitoring applications requiring 24V operation. Key Features AC DC NPN Input