DY-SV 5W MP3 Player Audio Playback Module This module makes it easy to add sound playback functionality to microcontroller like - Arduino, ESP32, Raspberry Pi etc. The sound files can also be played independently, without the need for a microcontroller. The sould files can be played by passing digital IO signals to the specific pins (check datasheet for more info). Switches can be used to control the sound playback. This module is great for playing audio files in voice assistants, GUI menus, greeting and alert messages, greeting cards, welcome messages, etc.