Support sampling rate (KHz): 8/11.025/12/16/22.05/24/32/44.1/48
24-bit DAC output, dynamic range support: 90dB, signal-to-noise ratio support: 85dB
Fully supports FAT16 and FAT32 file systems, supports up to 32G TF card, supports 32G U disk, and 64M bytes NORFLASH
Multiple control modes are available. IO control mode, serial port mode, AD button control mode
The broadcast language interruption function can pause the background music being played. After the advertisement is played, it returns to the background sound and continues playing.
Audio data is sorted by folders, up to 100 folders are supported, and 255 tracks can be allocated to each folder.
30 levels of volume adjustable, 6 levels of EQ adjustable

Application
Car navigation voice broadcast
Highway transportation inspection and toll station voice prompts
Voice prompts for security checks at railway stations and bus stations
Voice prompts in power, communications, and financial business halls
Voice prompts for vehicle entry and exit verification
Voice prompts for border inspection channels
Multi-channel voice alarm or equipment operation guidance voice
Voice announcement for safe driving of electric sightseeing vehicles
Automatic alarm for electromechanical equipment failure
Automatic broadcast equipment, scheduled broadcast

Package include:
4 x Mini MP3 Module