Bluetooth Audio Receiver Microphone Amplifier USB TF FM MP3 Decoder 4 Modes WMA WAV FLAC Player Amplifier Board
Antenna installation:
This product has two reserved antenna interface positions. Mark the position of FM ANT on the board, which can be directly welded
A flexible wire. You can also use our matching antenna to directly install it on the positioning hole on the FM ANT without welding, which is very convenient.
When recording, try to be close to the window or in a spacious and accessible area. If customers have high requirements for recording, it is recommended to use batteries for power supply to reduce power interference.
Product power supply:
Use a mobile phone charger or power bank to directly power the MICRO USB interface of the product through an Android data cable.
The product can also be powered by a DC 5V power supply, with 5V and GND interfaces marked on the board.
The 5V interface is connected to the positive pole of the power supply, and the GND interface is connected to the negative pole of the power supply. Equipped with reverse protection function
Battery powered:
It can be powered by a 3.7V lithium battery, with the positive pole connected to the 5V interface and the negative pole connected to the GND interface. At this point, it is necessary to short-circuit the two ends of the reverse protection diode (as shown in the diagram) on the board. The diode has a voltage drop of 0.7V, and if it is not removed, the voltage will be insufficient and it will not work. Note that there is no reverse protection for the diode after a short circuit. The positive and negative poles of the input power must be connected correctly, otherwise there is a risk of product burnout
Note: This product does not have a charging circuit for the battery. Please do not use a charging cable to charge the battery on the product.
Audio Bluetooth reception:
Switch the mode to Bluetooth mode by pressing the MODE button. At this time, the voice prompt "waiting for connection" and the LED indicator light will flash. Turn on the Bluetooth function of your phone, search for the device name of the product: BluetoothAudioV2, click on the device to connect, and after connecting, the voice will prompt "connection successful" and the LED indicator light will remain on. Click on the song to play on your phone, and the headphone jack on the product will output audio playback. At this time, the LED indicator light will flash slowly. The song can be operated through the buttons on the board or remote control.
USB/TF card playback:
Insert a USB flash drive or TF card into the corresponding interface of this product, and immediately enter music mode with a voice prompt
Music mode ". Play songs by reading audio from a USB flash drive/TF card. Supports WAV, WMA
Five audio formats including FLAC, APE, and MP3 enable true lossless playback.
The music mode is the highest priority among several modes. When users are using other modes, they can immediately switch to the music mode as soon as they connect the USB flash drive or TF card. The priority of TF card is higher than that of USB flash drive. When both USB flash drive and TF card are connected to the product, if the power is turned on or switched from other modes to music mode, the songs on TF card will be played first. Press the mode MODE button to enter the song playback on USB flash drive.
Remote control function:
To use this feature, you need to purchase a remote control version of the product. Remote control can operate all functions of this product, Convenient for users to perform remote control operations, resulting in better product performance. In audio mode, through the remote control.
You can perform fast forward and rewind operations on songs. Long press the button of the previous song to achieve the quick return function, long press the button of the previous song
The button implements fast forward function.
Audio output:
This product is equipped with a 3.5mm headphone jack, which can directly push the headphones to play. Users who need to use power amplifiers and speakers can use the audio conversion interface to connect the audio signal to the power amplifier board and play it through the speakers.
The interface labeled MUTE on the board is the mute control terminal. When there is no audio output from this product, the MUTE port is at a low level; when there is audio output, the MUTE port is at a high level. The amplifier board with MUTE interface is connected to the MUTE interface on this product, which can enable the amplifier board to enter low-power mode when there is no audio playback.
Sound conversion function:
This product has multiple sound effects output options, which can be selected through the E0 button. They are Normal
Class (Classical), JAZZ (Jazz), Rock (Rock), Bass (Heavy Bass), POP (Pop).
Key functions:
MODE: Mode selection button:
PLAY: Play/Pause button, automatic search for radio stations in radio mode
NEXT: Short press a song, long press to increase volume. In radio mode, it switches to the next radio station.
BACK: Short press the previous song, long press to decrease the volume. Jump to the previous radio station in radio mode
EO: Sound Conversion Button.
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