Electric solar panel cleaning brush: The brush features a 150-300 rpm automatic rotating head that removes stubborn stains with ease. Compared to manual cleaning, it expands the cleaning width to 60 cm (23.6 inches), boosting work efficiency by up to 80% and reducing labor requirements significantly. Adjustable brush head: The angle and height of the brush head can be adjusted at any time to ensure it fits the solar panel surface ly. This design eliminates dead corners during cleaning, providing an unprecedented cleaning result for your panels. Rod and brush head: The telescopic rod is made of lightweight aluminum alloy and is available in three lengths: 3.5 m (11.4 ft), 5.5 m (18 ft), and 7.5 m (24.6 ft). The nylon thread brush head has a cleaning width of 60 cm (23.6 inches), covering large areas quickly. Cleaning mode: The cleaning brush set includes a water outlet that allows water supply during cleaning, enabling easy switching between dry and wet modes. Dry mode is ideal for quick stain removal, while wet mode deeply cleans every corner of the solar panel to ensure nothing is missed. Wide application: The lightweight design eliminates the burden of carrying heavy equipment, making the device convenient to use. This cleaning tool is suitable not only for solar panels but also for cleaning exterior windows, RV windows, store signs, and billboards.