A maintenance technician inspects a high-voltage switchgear panel during routine commissioning, activating the Auer LED multi flash indicator to verify the correct operation of the circuit breaker’s auxiliary power supply. This compact, dual-mode indicator is installed within the control cabinets of industrial machinery, providing a clear visual signal to operators and technicians during system diagnostics and troubleshooting. Its ability to function on both AC and DC power sources makes it ideal for use in environments where power supply stability varies, such as in automated production lines or heavy-duty manufacturing plants. The yellow flashing light serves as a reliable status indicator, helping maintenance teams quickly identify power disruptions or electrical faults without the need for additional diagnostic tools. By offering immediate visual feedback, the indicator supports efficient fault isolation and ensures that maintenance procedures can proceed with minimal downtime. It is commonly found in the service equipment of maintenance contractors who support a wide range of industrial applications, from conveyor systems to compressed air networks, where reliable power monitoring is critical to operational continuity.