Product introduction:
Support Bluetooth hands-free call, support lossless WAV WMA MP3 FLAC FM 3.5AUX; self-playing TF card and U disk support folder selection and playback（Remote control operation）-Convenient to choose and play different music categories; support breakpoint memory（See the operating instructions in the connection for details）; The voice prompt is in English
1. Support breakpoint memory（When the U disk or TF card is pulled out in the playback state, the power will be cut off after about 3 seconds, and the broken point will be remembered when the power is turned on again.）; Support USB sound card function（With a double-headed USB cable, one end is plugged into the computer and the other end is plugged into the panel USB. The music played by the computer can be transferred to the speaker through the audio output of the module.）；
2. Model: M01BT; Panel 3.5AUX input Bluetooth MP3 decoder board Bluetooth module lossless MP3 Bluetooth decoder board; Panel size: 107MM*height 25MM*deep 38MM; opening: 83*20*38 deep MM; installation hole spacing: 92MM; Voltage: DC 7V-12V
3. Multi-function: panel 3.5AUX input; USB/TF play MP3 lossless WAV and WMA/FLAC can also support folder selection play; FM  AUX ; Stereo Bluetooth can also be used for hands-free calls, DIY speakers and A rare weapon for refitting audio/car
4. Bluetooth: After the baby is paired with the mobile phone, the mobile phone will be wirelessly received to play all formats of music. If your mobile phone supports a wide range of formats, you can listen to music in any format.
Module features:
l Support Bluetooth and hands-free calling（After the baby and the mobile phone are paired, the mobile phone will receive all music formats wirelessly. If your mobile phone supports a wide range of formats, it doesn’t matter what format you want to listen to, and you can also answer the phone hands-free, and you can hear it when you call“ Toot—toot”press pause to answer the call）
Call back: Continuously short press the pause button in the Bluetooth state to call back the last call number,
3 Support folder selection and playback（Remote control operation）-Convenient to choose and play different music categories. Put the music in different folders in the card/U disk, DJ music/background music/children’s songs, ,; in the play mode, long press the up or down song, you can choose the folder to play（At the same time there will be F001, F002,...）
Loop mode: press ”arrow or “RPT”symbol key in playback mode: random（RAN）/Single cycle（ONE）/Folder loop（FOL）/Full song loop（ALL）; If you press to the current folder（FOL）Just loop the whole song in this folder
4 Support switching between USB/card/Bluetooth/FM/AUX. Conversion prompt and caller ID (voice in Chinese and English is optional, default delivery is in English)
5 Support MP3/WMA/WAV format music. MP3 songs 32-320kbps, WMA/WAV is: for WAV music, it is a normal two-sound channel below 1411kbps
Support USB/card switching, previous song, next song, volume adjustment, EQ, play/pause, stop,
Single repeat, mute, shutdown, direct selection of songs.
6 Support Bluetooth Bluetoot previous song, next song, volume adjustment, play/pause, mute.
7 Support power-off memory function: memorize the song and volume played before the power-off to the current point. Breakpoint memory（When the U disk or SD/TF card is pulled out in the playback state, it will be disconnected after about 3 seconds, and the interrupted point will be memorized when the power is turned on again.）
(Object-panel + decoder board + remote control + 2P plug line including power supply reverse connection protection + 3P audio plug line)
Instructions:

pay attention:

Note: Not a smart phone（Android system）To enter the password -0000; this product has a call function. Product Bluetooth device name M01BT
Special note 1: The module power ground and signal ground are separated, and there is a separate resistor to make it easier for different power amplifiers to choose and use（See the R32 0 ohm resistor on the board）, Now the shipment has been connected with 0 Euro. Some power amplifiers have noise. It is recommended to use a separate power supply to power the decoder board when using it. If it is powered by the same power supply as the amplifier, please connect the audio output ground of the decoder board to the power ground ("AGND" and "GND" R32 0ohm resistor) must be opened here before wiring (operate with the power off); and if you don’t understand the wiring or other problems or can’t handle it well, you can contact us）
Special attention 2:
Power supply: Do not directly connect the power supply to the battery, cigarette lighter, and car lock. There are precedents in these three places where the voltage is unstable and the board is damaged, and there are interferences in some cars. Pay attention! ! Please connect to the regulated and rectified power supply (usually 8-10V) in the CD or cassette player. The 12V electricity on the car, including the pillars behind the CD iron case, are not stabilized and rectified; remember!!; if you can’t or don’t find the corresponding power supply, you can contact us
Home modification attention
A: When connecting from the original power amplifier, please pay attention to the rectified DC power supply of the power amplifier; do not directly connect the power supply at the transformer or before the rectification. The power at the transformer and before the rectification is still AC power, and the router is also AC power. Can not directly supply power to the decoder board, this will burn the product)
B: The power supply requires full-wave rectification, and the filter has a capacitor above 1000UF to supply power to the decoder board. If a poorly filtered power supply has a direct impact on the radio and decoding sound quality
About car audio interference（Common Land Phenomenon）, Depending on the car condition, it can be handled as follows
B: If the electricity is not taken from the CD circuit, you can add a DC-DC isolated power supply.
C: The audio output is connected to a 1:1 isolation audio transformer (note that it is a dedicated audio transformer).
D: Connect a BA3121 circuit (noise reduction circuit)
1. Working voltage 12V: DC 7V-12V, current 800MA-1A. If the current is not enough, there will be phenomena such as skipping or remote control failure or abnormal Bluetooth reading.（If you have this problem, please check your power supply）; The voltage cannot be higher than the higher value of the voltage range required by the product, otherwise the main chip and related components will be damaged.
2. Before shipment, we will add the power reverse connection protection to the plug line, and the reverse connection of the power supply will not damage the product in a short time.
3. If you are looking for the audio signal cable in the CD player when you are refitting on a car, and you are not sure which line is the audio input, it is recommended to connect an electrolytic capacitor within 10UF in series on the left and right audio output lines of the decoder board. Protect the decoded audio output module.