This solar powered radar speed limit sign is designed for traffic feedback and speed display applications. Constructed with an aluminum shell and engineering grade reflective film, it ensures durability and high visibility. Available in two sizes: 20x27 inches (50x70 cm) and 24x35 inches (60x90 cm). It features a waterproof rating of IP65, a visual distance exceeding 500 meters, and operates in temperatures from -40°C to 60°C. The service life is over 100,000 hours, making it suitable for expressways, industrial parks, speed limit roads, and other locations. The package includes the radar speed limit sign, a solar panel, mounting accessories, and a remote control for setting the speedometer number. Installation tips: place in direct sunlight without shade, test the LED lamp by covering the solar panel to simulate night operation, calibrate the solar panel for optimal sunlight exposure, and contact support via email for any inquiries.