Supported Sampling Rates (kHz): 8/11.025/12/16/22.05/24/32/44.1/48; 24 -bit output, support for dynamic range 90dB, SNR support 85dB.The DFPlayer perfectly integrates hard decoding module, which supports common audio formats such as MP3, WAV and WMA.Supports FAT16, FAT32 file system, maximum support 32G TF card, support U disk to 32G, 64M bytes NORFLASH.Control modes: I/O control mode, serial mode, AD button control mode.Through a simple serial port, you can play the designated music without any other tedious underlying operations.The DFPlayer Mini MP3 Player For 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 for or any other with RX/TX capabilitiesInput Voltage: DC 3.2~5.0Vadvertising sound waiting function, the music can be suspended. when advertising is over in the music continue to playaudio data sorted by folder, supports up to 100 folders, every folder can hold up to 255 songs.1. Car navigation voice broadcast2. Multi-channel voice alarm or voice guidance equipment operation3. Electric sightseeing bus safety with voice announcement4. Electrical and mechanical equipment failure5. Fire alarm voice prompts6. Automatic broadcast equipment, regular broadcastMaterial:PCBcolour:blackPackage Contents:5 * Mp3 Player BoardOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.