The Sabik Lighthouse Unit (SLU-24 / SLU-36) is a reliable and efficient solid-state light source designed to replace traditional lamps in rotating or fixed classical lighthouse optics. It enhances the service life of traditional lighthouses without the need for costly and complicated rework or decommissioning. Additionally, this unit provides various benefits, including remote monitoring capabilities, reduced maintenance costs, and compatibility with solar or other renewable power sources. Importantly, it preserves the traditional appearance, existing optics, rotating beam, flash characteristics, and heritage value of classical lighthouses.