A LED SIGNS which consists of SMD light emitting diodes can be installed outdoors. Their brightness allows them to be used outdoors as digital billboards or any retail LED display screen. The outdoor LED displays should have high brightness in order to be seen in times of bright sunlight and have weather proof construction to withstand the rain, snow , dust. LED digital signs offer the lowest cost per impression when compared to traditional advertising media such as newspaper, radio or television according to the SBA.