M38 bluetooth 4.2 Audio Receiver Module 5W+5W Lossless Car Speaker Headphone Amplifier Board Wireless Refit COD

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ID: 1486746
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                    User Manual: Click here to open

                    For different needs of customers, we offer 3 versions for you to choose from:

                    Function / Model M18 (Product ID: 1476791) M28 (Product ID: 1486747) M38 (this item)
                    Micro power supply ×
                    Audio headphone jack × ×
                    Built-in amplifier × × √(5W+5W)
                    Lithium battery powered
                    Support USB sound card, free drive × ×
                    Volume memory/adjustment × ×
                    MUTE mute interface × ×
                    Button extension × ×
                    Bluetooth version bluetooch V4.2
                    Support Bluetooth protocol HFPV1.7, A2DPV1.2, AVRCPV1.5, AVCTPV1.2, AVDTPV1.2
                    Format support Support WAV/WMA/FLAC/APE/MP3 lossless decoding, stereo two-channel output
                    Operating Voltage 5V/3.7V-4.2V
                    Broadcast status not connected 5.5MA
                    Connection working status 20MA
                    Deep sleeping 3UA
                    Transmission distance 20 meters (empty or low interference environment)
                    Operating temperature  -40°C to +85°C
                    Sensitivity  -87dbm

                    Introduction:
                     
                    This product MH-M38 is a low-power bluetooth design solution, supporting the latest Bluetooth 4.2 transmission, two-channel stereo lossless playback, Bluetooth connection after the module is connected to Bluetooth, very convenient. In an open environment, the Bluetooth connection distance can be up to 20 meters.
                    Widely used in a variety of Bluetooth audio reception, a variety of audio DIY modification.

                    Pin number Pin header Description
                    1 5V Power positive 5V
                    2 GND Negative power supply
                    3 VBAT Lithium battery positive 3.7-4.2V
                    4 L+/L- Left channel output (direct speaker)
                    5 R+/R- Right channel output (direct speaker)

                    Function Description:
                     
                    Bluetooth V4.2 version, supports Bluetooth automatic connection technology, supports WAV/WMA/FLAC/APE/MP3 lossless decoding, stereo dual channel output.
                    After the module is powered on, the mobile phone searches for the Bluetooth name MH-M18/MH-M28/MH-M38, and can play music after connecting Bluetooth.
                     
                    Note:

                    1. Power supply: You can directly use the MICRO USB Android cable 5V for direct power supply, or you can also connect 5V power supply or 3.7V lithium battery (as shown in the figure below). Note that the 5V and 3.7V power supply interfaces are different. 5V is connected to 5V and GND, and the 3.7V lithium battery is connected to VBAT and GND.
                    The maximum operating current is 5V2A. It is recommended to use a regulated power supply of 5V2A for better sound quality.
                    2. Support USB sound card, free drive (plug and play). Connect the module to the computer with the USB cable, and the computer can play music through the module amplifier output.
                    3. Audio output: output left and right channel stereo audio signals, can be connected to two 2-8 euro, 3-5W speakers, push 4 O 5W speakers.
                    4. This product has its own dual 5W power amplifier circuit, and must not be connected to another amplifier! The outputs of the two amplifiers cannot be connected in parallel or the negative poles are connected together, otherwise the power amplifier chip is damaged.

                    Package includes:

                    1 x M38 Module




















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