Do not look directly at the light.Perform regular inspections.(Lighting,liquid leakage,etc)Remove the battery if it will not be used for a long period of time.Do not disassemble or modify.If it is damaged, stop using it immediatery.Avoid direct sunlight and high temperature and humidity.The product may fall depending on the material and shape of the installation site.Do not use this product near objects that are affected by magnetism.