High brightness and energy saving: 2.8/3.8V low-voltage power supply, ICE high brightness lamp, automatically adjust the brightness; HD display: Above 210 meters (vehicle speed 120) in dynamic, and can still be clearly visible in more than 250 meters in static distance in foggy weather; It can still display the road conditions in high definition to warn and guide vehicles to pass safely and efficiently; Efficient heat dissipation: Large flow negative pressure heat dissipation in the cabinet, efficient heat discharge, and more stable operation of LED display; Solar charging+9.6KWH large capacity battery, which can continuously power on the LED display 365 days a year; Hydraulic lifting+ rotating structure; The whole screen hovers at 1M height and 360 ° to play information at any height and angle. Double safety towing structure, 10mm safety chain, 80 level towing hook ring with safe and convenient dragging. 7-core signal connector can control EMARK certified trailer indicator, brake light, turn light and side light in the whole vehicle. Support GPS positioning; Support U disk/mobile phone/tablet/computer/4G/WiFi playback; Support video and picture playback such as MP4/AVI/jpg/; It is mainly used for high-speed gantry and F frame traffic guidance; Safety warning signs for road repair vehicles, cleaning vehicles, sanitation vehicles and other road operation vehicles.