Arduino MP3 Voice Playback Module, UART I/O Trigger Module, Class D Amplifier Board, 5W Amplifier Board, 8MB SD/TF Memory

This module integrates E/A sub-section triggering, UART control of the serial interface, and ONE_line single bus control of the serial interface. It features a built-in 5W Class D amplifier circuit and can directly drive 3-5W 4-ohm speakers. It can connect to a computer for updating audio files via a USB cable. It includes a 3.5mm audio interface, a micro USB download interface, and a button-in-a-module design. It supports MP3 and WAV decoding formats and supports 64-bit (8MB) flash memory.