Audio module with built-in 3W amplifier, USB audio copy, MCU serial-port control and push-button operation Key benefits Simple, all-in-one audio solution: includes a 3W amplifier so you can drive a small speaker directly without adding a separate amp. Easy content management: USB audio copy function lets you transfer audio files from a USB drive for local playback, removing the need for a continuous external source. Flexible control options: operate the module via an MCU serial port for automated or remote control, or use the integrated push-button input for local, manual control. Fast integration: designed for straightforward connection to microcontrollers and standard USB storage devices so it fits embedded and standalone applications. Main functions and performance 3W built-in amplifier: provides enough output for small public-address, desktop, or interactive applications where moderate volume and clear voice/music playback are required. USB audio copy: move audio files from a USB drive to the device using the copy function for offline playback and simplified content updates. MCU serial-port control: supports serial command control from a microcontroller for play/pause, track selection, and other playback functions (control protocol supported via MCU serial port). Push-button control: on-board push-button handling enables direct user control for basic operations without extra electronics. Compatibility and interfaces Works with standard USB storage devices for the audio copy workflow. Interfaces to common microcontrollers through a serial (UART) port for command-based control. Designed to drive a compatible speaker directly via the integrated 3W amplifier. Practical applications Retail or trade-show demos: play product descriptions or background music from local files copied from USB, with MCU control for timed playback or events. Embedded projects and prototypes: add speech prompts or sound effects to devices using MCU serial commands, with push-button overrides for testing or demonstrations. Small public-address or information kiosks: provide clear, local audio output without requiring a separate amplifier, and update audio via USB. Why choose this module Reduces system complexity by combining amplifier, USB audio copy, and dual control methods in one unit. Offers both automated (MCU) and manual (push-button) control, making it adaptable for development and finished products. Practical for projects that require simple, reliable audio playback with straightforward content updates. Note: This description reflects the module’s built-in 3W amplifier, USB audio copy capability, MCU serial-port control, and push-button control as provided.