The Mini MP3 Player is a small and low price MP3 module with an simplified output directly to the speaker. The module can be used as a stand alone module with attached battery, speaker and push buttons or used in combination with an UNO or any other with RX/TX capabilities.

Specifications:
Input Voltage: DC 3.2~5.0V
supported sampling rates (kHz): 8/11.025/12/16/22.05/24/32/44.1/48
24 -bit DAC output, support for dynamic range 90dB , SNR support 85dB
fully supports FAT16 , FAT32 file system, maximum support 32G of the TF card, support 32G of U disk, 64M bytes NORFLASH
a variety of control modes, I/O control mode, serial mode, AD button control mode
advertising sound waiting function, the music can be suspended. when advertising is over in the music continue to play
audio data sorted by folder, supports up to 100 folders, every folder can hold up to 255 songs
30 level adjustable volume, 6-level EQ adjustable

Control Mode:
1) Serial Mode
Support for asynchronous serial communication mode via PC serial sending commands Communication Standard:9600 bps
Data bits :1
Checkout :none
Flow Control :none
2) AD KEY Mode
We use the AD module keys, instead of the traditional method of matrix keyboard connection, it is to take advantage of increasingly powerful MCU AD functionality, Our module default configuration 2 AD port, 20 key resistance distribution.
3) I/O Mode

Application:
1, car navigation voice broadcast
2, road transport inspectors, toll stations voice prompts
3, train, bus safety inspection voice prompts
4, electricity, communications, financial operating room voice prompts
5 vehicles into and out of the channel to verify the voice prompts
6. frontier channel voice prompts
7, multi-channel voice alarm or voice guidance equipment operation
8, electric sightseeing bus safety with voice announcement
9, electrical and mechanical equipment failure alarm
10, fire alarm voice prompts
11, automatic broadcast equipment, regular broadcast
Package Included:
5 x Mini MP3 Player Module