By using a brush that moves up and down, it removes the fine dust and dust that accumulates continuously, keeping the solar module clean at all times, maintaining the charging efficiency at the time of initial install. Depending on the saved program, the brush is operated four times a day to remove fine dust. The power produced by the high-efficiency solar panel is stored in a lithium-ion battery using an MPPT controller. The all-in-one lithium-ion battery has a long life and high charging and cooling efficiency compared to conventional lead-axis batteries. Led light sources with a light efficiency of 150 lumen/w are designed for maximum efficiency with low power.
