Our company specially for outdoor small spacing research and development of an outdoor high performance module, professional private model PCB, using international FR-4 layer board, double layer circuit board design, plate thickness 1.6mm, surface treatment process for tin spray. LED lamp adopts 1921 outdoor lamp beads, built-in 8k SRAM memory, can store a frame of complete display data, support 1~16 scan LED display frame data storage and display, reduce the data clock frequency, and can achieve high refresh, high gray level display effect.