Sell Bluetooth decoder board MP3 lossless car speaker amplifier modified Bluetooth 4.1 circuit board best price

Function: This module supports Bluetooth 4.1. It supports automatic link back function, WAV+APE+FLAC+MP3 lossless decoding, stereo output, and TF slot. It can insert TF card, support U disk and play TF card. Specification: Power Supply Interface: Universal Micro USB 5V Power Supply Power supply pad: external 3.7V-5V power supply modification USB (U disk) interface: can support playing MP3, WAV, APE, FLAC files in U disk, support FAT16/32 file format TF card slot: can support playing MP3, WAV, APE, FLAC files in TF card, support FAT16/32 file format LED Indicator: Bluetooth mode lamp is always on, music playing mode lamp is flickering 3.5mm Stereo Output: Standard 3.5mm Interface, Stereo Source Input, Headset Insertion, Power Amplifier Device Connection Product size: 45mm*40mm*8mm/1.77*1.57*0.31'' Packing weight: 12g Button Description: MODE: "Short Press" can switch TF card, U disk and Bluetooth mode. P/P: "Short Press", Play/pause NEXT/V+: "Short Press" is the next song, and "Short Press" is the volume increase. PREV/V+: "Short Press" is the last song, and "Long Press" is the volume reduction. RPT: Short Press for Mono/Loop Switching Operation Manual: 1. Mode control: When the decoder board has no U disk or TF card, the default mode is Bluetooth when the module is powered on. When the decoder board is plugged in with U disk or TF card, the default mode of module power-on is music mode. 2. Music mode: When you insert a U disk or TF card, you can play the music files stored in it. 3. Bluetooth mode: In this mode, the telegraph will insert the English "then Bluetooth device is ready to pair" to show that it has entered the Bluetooth mode and waits for a matching connection; the mobile phone opens the Bluetooth search for "HW-BT" and connects; when the connection is successful, the decoder board will have an English prompt "the Bluetooth decvice is connected succesfully", and then the decoder board can play music. Warm Tips: 1. If the U disk is playing, it is recommended to use USB 5V power supply (not 3.7V lithium battery power supply), because the early U disk does not support 3.3V voltage. 2. U disk or TF card, decoding only supports FAT16/FAT32 file system, not NTFS. Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding.