Aerodynamic LED Light Bar Suitable for High Speed Emergency Vehicles Slim design, Vivid & powerful signal Compact and aerodynamic design minimizes air resistance in high speed vehicles Transparent polycarbonate outer and inner lens provides clear signal light transmission Strong mechanical strength, heat, and UV light resistance Excellent protection from vibration and impact with use of aluminum boards for both the top and bottom plates Internal heat discharges naturally because each LED module adopts an excellent heat dissipative structure QLV-SET includes amplifier that has a built-in one-touch switch for selection between signal sound and warning light QLV-SET includes a 100W high volume horn with clear warning sounds 1,250mm, 1,150mm and 885mm length models are also available Lens color : ��Blue-Red ��Red-Red ��Amber-Amber ��Green-Green Available in customized color arrangements - Materials QLV Light Bar Model : Lens-PC, Cover-Al, Board-Al, Mount bracket-STS QLV-SET : QLV Light Bar Model-PC other/ SAMP-100-Steel, Al/ SM-100ND-Steel Ambient operating temperature : -30°C to +50°C Protection rating : IP56