Sell Yy Digital Bluetooth Audio Power Amplifier Board 2 Channel 5V PAM8403 5W+5W @PH best price

---------------------Welcome to Yyci.ph------------ Decription: Specifications: Name: Digital Bluetooth Audio Power Amplifier Board Chip Model: PAM8403 Transmission Distance: Max 20 meters (Unobstructed) Power Supply: 5V(Micro input) Number of Channels: 2 channels Max Power: 5W+5W Product 49mm x 29mm x 4.5mm Weight: 50g Notice: Please allow 2-3mm differs due to manual measurement. Instructions For Use: 1.The first need install the TR18650 battery, pay attention to distinguish the polarity! (The product does not contain batteries, you need to buy it yourself.) 2. Two wires are connected to the speaker, red is positive and black is negative. 3. Insert an SD card with song file in the SD card slot or insert a U-disk with a song file in the USB interface. (Also connected by Bluetooth, but need to be turned on before you can connect to Bluetooth) 4. Open the switch key, it will automatically read the SD card or U-disk, and start playing songs, if the SD card and U disk are installed at the same time, it will read the SD card file by default and play. 5. ① button is the playlist switch button, you can choose to play the song in the SD card or U-disk, but the Bluetooth playlist can not be switched, and you need to remove the SD card and U disk. 6. ② button is the play pause button, press pause, then press play again. 7. ③ button is the song switching button, which is also the volume button. Short press is to play the previous song, long press is to increase the volume. 8. ④ button is the song switching button, which is also the volume button. Short press is to play the next song, long press is to reduce the volume. Included: 1 x Digital Bluetooth Audio Power Amplifier Board