It is an all-new digital out-of-home advertising LED display billboard, can be completely front service, unlike most of traditional outdoor display display, It is featuring a thiner and lighter cabinet, a fundamental redesigned weatherproof module bring A1 to a whole new level of performance. And beyond that, A1 is also a common cothode cabinet, it can save energy up to 75% without reducing brightness and contrast ratio. display provides 2 ways of service, signal system and power system can be either accessed from front or back at the same time, it is effortless and comvenient for both wall fixed installation or standing billboard.