... language. LED lights exposed, no water mist, display clearly.Arc-shaped design, very beautiful.Convex contour design, easy to print ... remote control.Passed Reverse Polarity Performance, Over-current Performance, Arc Test, ISO7637 Instant electromagnetism Anti-jamming Performance, Anti-vibration ... consumption<15W (in normal usage) Certificate:CE, FCC Arc-shaped design wrieless taxi roof top signs