... available 3.Bright light 4.Low voltage operation LED Aluminum sign,LED sign,LED letter sign,LED outdoor sign LED Aluminum letters are ... to install> Use Tianwan and CREE chip LED modules,Super brightness,Light uniformity> Available emitting colors with Green,Blue, ... 000 hours> Special encapsulant design,Completely waterproof,Safety rank Ip65> Wide operating temperature range under dry or humid ...