Retronic Navigation Light Panels are versatile and Simple to use. They meet all your needs for monitoring and protecting each navigation signal. All monitoring is performed automatically and the results are displayed with bright LEDs, organized as a mimic of the vessel. Each light circuit is supervised by current monitoring and there is no electrical connection between the light circuit and the monitoring circuit. With the light switched ON, an illuminated LED shows proper function of the light. The brightness of LED can be adjusted but cannot be dimmed to zero. If the lamp circuit is defective, corresponding LED will start flashing and an audible alarm will sound and will stay on until the alarm is acknowledged.