A3L is an LED display multimedia player that supports playing videos, pictures, GIF animations, texts, WPS documents, tables, clocks, timing, and other programs. Standard configuration of Wi-Fi, support mobile phone APP - "LedArt" wireless control; support access to the "XiaoHui Cloud" platform, easy to achieve Internet remote cluster management; The capacity storage space makes asynchronous playback worry-free; it supports external connection of various environmental monitoring sensors to realize real-time viewing of environmental monitoring data. A3L has high video playback performance, added terminal network security protection mechanism, simple software operation, and complete functions. It applied to LED displays in various commercial display, smart display and other fields. Input: 1. Support 1 communication network port for debugging parameters, faster program sending speed; 2. Support 1 channel USB2.0, 1 channel USB3.0 communication interface, which can be used for inserting programs and expanding capacity; 3. Supports 1 channels sensor input interface, externally connected to various environmental monitoring sensors. Output: 1. Standard 1 Gigabit output network ports, directly cascaded HD-R series receiving card control display; 2. The maximum control range is 655,360 pixels, the maximum horizontal (discounted) support is 8192 pixels, and the maximum vertical support is 3840 pixels;