【High-Efficiency Solar Panel】: Wireless Solar Radar Sign Real-Time displayuse an innovative synchronized LED light system to increase driver awareness of road signage. Solar Panel Included for Solar Powered Signs.40W 20AH solar panel ensures rapid charging even in low sunlight, keeping your sign illuminated all night. 【All-Weather Real-Time Monitoring】：Radar Feedback Sign, real-time display, radar speed measurement, high solar panel conversion rate, fast charging, not affected by bad weather, improve night visibility, visible distance greater than 200M. 【Remote Control Functionality】: Each sign comes with a dedicated remote control, allowing users to set custom speed limits. When speeding is detected, the LED display instantly switches from green to red, alerting drivers to dangerous speeds. 【Easy To Install】Solar Radar Speed Limit Sign U-hoop installation (included), regular 76MM, please contact us for special needs. Can be easily installed to galvanized posts, wooden posts, chain link fences, etc. 【Weather Re-sistant Design】: Warning Speed Limit Board with IP65 Protection & All Weather Durability, Built to withstand harsh outdoor conditions! Re-sistant to low-pressure water jets, ensuring reliable performance in rain, snow, or wind environments.