R1.188.1890.0 is an SNA 4044K-A emergency stop relay designed for safe automation technology applications. This device operates at a rated voltage of 230 V AC and features screw terminals with pluggable connection capability. The relay includes three green LEDs for function display and provides dual-channel safety control logic with reset functionality. It is commonly used in machine building, wind power, and building automation systems where reliable emergency stop functionality and safety compliance are essential requirements.