Bluetooth Decoder Board MP3 Lossless Car Speaker Amplifier Modification Bluetooth 4.1 Circuit Board(5 Keys)

-This module supports Bluetooth 4.1, support for automatic back to the function, support for WAV + APE + FLAC + MP3 lossless decoding, stereo output, but also comes with a TF card slot, you can plug the TF card, support for U disk, TF card playback

-Module parameters:
1. Power supply interface: universal Micro USB 5V power supply
2. Power supply pad: external 3.7V-5V power supply modification
3. USB (U disk) interface: can support the playback of U disk MP3, WAV, APE, FLAC files, support FAT16/32 file format
4. TF card slot: can support the playback of TF card in the MP3, WAV, APE, FLAC files, support for FAT16/32 file format
5. LED indicator: Bluetooth mode light is on, music playback mode light is flashing
6. 3.5mm stereo output: standard 3.5mm interface, can be input stereo audio source, can be plugged into headphones, can also be connected to the amplifier device

-Button description:
1. MODE: short press, you can switch TF card, U disk, Bluetooth mode switching
2. P/P: short press, play/pause
3. NEXT/V+: short press for the next song, short press for the volume increase
4. PREV/V+: short press for the previous song, long press for the volume decrease
5. RPT: short press for single song/loop switching

-Use instructions:
1. Mode control: when the decoder board is not plugged into a U disk or TF card, the module defaults to Bluetooth mode after power on; when the decoder board is plugged into a U disk or TF card, the module defaults to music mode after power on
2. Music mode: when inserting U disk or TF card, you can play the music files stored in it
3. Bluetooth mode: in this mode power will be inserted into the english -Then bluetooth device is ready to pair, explains the bluetooth mode and wait for the matching connection; cell phone to open the bluetooth search for HW-BT and connect; when the connection is successful, the decoder board will be prompted by english again - the bluetooth decvice is when successfully connected the bluetooth decvice is connected succesfully, and at this time the decoder board can play music

-Note: if U disk playback, it is recommended to use USB 5V power supply (not recommended to use 3.7V lithium battery power supply), because the early U disk does not support 3.3V voltage; U disk or TF card, the decoding only supports FAT16/FAT32 file system, does not support NTFS