MP3-TF-16P MP3 Disk TF Card Module Serial Port is a compact and inexpensive MP3 module that can be connected directly to the speaker. Module with battery power supply, speaker, the keypad can be used alone, or through the serial port control, as the Arduino UNO or any microcontroller with a serial port module. The module itself perfectly integrated hardware decodes MP3, WAV, WMA. While the software supports TF card drivers to support the FAT16, FAT32 file system. It can be done by the simple serial command that plays the specified music, as well as how to play music and other functions, without tedious low-level, easy to use, stable, and reliable.