Continuous working time in rainy day can reach more than 15 days (12 hours a day). Photocell can switch ON/OFF the light in rainy days or at night automatically. Standardization of optical design, high photoelectric conversion efficiency. Special LED chips for aviation obstruction lights, conversion efficiency is much higher than other  general LED. Provide ability of lightning protection, light fastness, resist snow and rain. Based on LED technology, its color meet the IALA Recommendations E-200-1 requirement. Replaceable sealed lead-acid battery is used inside, with service life of more than 2 years. 350 light characteristics, user can adjust according to require. Bird spike against bird drop. No radio frequency (RF), no electromagnetic interference. Working stable and low cost.