This software connects LED devices wirelessly through mobile phones. The main functions are APP connected LED device, APP switch LED device, APP sends content to LED device for display, APP updates LED device firmware and so on. For added security, each operation instruction has been encrypted. In addition, there are feedback results for each operation of the LED device. When the APP operates the LED device, it uses a technology similar to the message queue. The current operation has not been completed and the next operation is not allowed. However, the validity period of each operation is only a few seconds. When the operation has not been completed within the specified time, It expires, at which point the next operation is allowed.