1, Traffic Sign 2,Voltage: 220/24/12V 3,service time 20years 4,CE certification 5,Al shell ... ,so accord with LEDs quantity2Voltage inputAC 220V+-15% or DC 12V/24V3Life spanover 100,000 hours for LEDs, over 50,000 ... light. (or accord with customers need) Radar Safety Cross System Solar Pedestrian Traffic Sign