Aviation Obstruction light (Aviation Obstruction light), also known as navigation light equipment, is a special light to mark the obstacle, belongs to the navigation light equipment industry, aviation obstacle light is its seat under the light species range. In order to have a difference with the general lighting, aviation obstacle light is not always on but flashing, low light intensity aviation obstacle light is always on, medium light intensity aviation obstacle light and high light intensity aviation obstacle light is flashing, flashing frequency is not less than 20 times per minute, not higher than 60 times per minute. The role of aviation obstacle lights is to show the outline of the structure, so that aircraft operators can judge the height and outline of the obstacle, to play a warning role. And according to the Civil Aviation Administration's latest document requirements, aviation obstacle lights must have the Civil Aviation Administration of China Airport Division designated testing center issued by the qualified test report to be valid.