... 20 modules Generation 3.Aluminium and PC materials 4.Voltage:12V/24V DC LED emergency lightbar• Model number TBD-GA-28L21D• ... , also can make flash patterns by your choice• With programme controller• Easy maintenance and module replacement• Red, blue, amber, white, ... Length: 1200mm, customized length is ok• Operating voltage: 12/24V DC• Operating temperature: -30°-+65°• Water proof, shock proof, dust ...