Display units for visually presenting operational status, production data, and alarm information of industrial robots and automation equipment. Multi-color display devices using LCD, LED, and OLED panels specialized for manufacturing line monitoring, quality control data display, and equipment utilization rate display. Pure display-only equipment without touch panel functionality, available in control panel embedded, wall-mounted, and stand-alone types. Unlike HMI operation panels, these are specialized solely for display functions, receiving signals from PLCs and robot controllers to show numerical values, graphs, and status displays. Includes IP65 dust and water resistant models and high-brightness outdoor compatible models.