1)lightbar with LED display screen 2)Working voltage:DC12V/24V 3)Color:red,blue,amber,white 4)Materials:PC Lens,aluminum base ... 1)lightbar with LED display screen2)Working voltage:DC12V/24V3)Color:red,blue,amber,white4)Materials:PC Lens ... when the screen colsedb) Rear side: 10pcs amber LED modulesc) Sides: 4pcs LED modules,are available in red,amber,blue6)The electronic overturn ...