Early warning lights perceive and warn a certain range of intersections, and provide yellow light warnings to passing pedestrians in time to reduce the occurrence of traffic accidents. The early warning lamp relies on the pyroelectric sensor for sensing, and the distance needs to be set in advance. Once someone enters the set distance, that is, the detection area, the infrared radiation of the human body is focused through part of the mirror surface and received by the pyroelectric element. It can remind passers-by to have other pedestrians or vehicles walking towards the intersection outside their sight, which can effectively avoid or reduce the occurrence of accidents. In terms of product appearance design, the shape of the early warning lamp design is simple and intuitive, using advanced optical software and optimized structural sealing design, the shell is made of high-quality engineering plastics, and the manufacturing process is excellent, which can withstand strong collisions and impacts to ensure that the lamps are in a harsh environment. Stable and reliable work for a long time. Different colors of lights represent different functional meanings, which are set according to people's common sense to facilitate people's understanding and understanding. Through industrial design innovation, the visual recognition of early warning lamps is strengthened, and the environmental adaptability and safety reliability of products are improved. As a warning sign for various special places, the early warning lamp has superior functions. It uses ultra-high brightness solid-state maintenance-free LED light source with high luminous efficiency, long life, energy saving and environmental protection. Excellent core circuit design, arbitrary conversion of sound and sound and light working modes, sound alarm sound intensity up to 115 decibels or more, strong penetrating ability and higher working efficiency. The design is simple in structure, small in size, light in weight, convenient to carry, strong in practicability, rated voltage, low in production cost, and can be placed on the table, portable, magnetic adsorption and other methods, which is very convenient to use. Widely used in municipal, construction operations and monitoring, rescue, rescue workers for signal communication and direction indication.