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Wireless Bluetooth audio module 4.2 stereo
lossless high fidelity HIFI DIY modification
Product introduction:
This product MH-M18 / M28 / M38 is a low-power Bluetooth design solution that supports the latest Bluetooth
4.2 transmission, two-channel stereo lossless playback. After the module is connected to Bluetooth, Bluetooth
wireless transmission can be quickly achieved, which is very convenient. In an open environment, the Bluetooth
connection distance can reach 20 meters.
Widely used in various Bluetooth audio reception, various audio DIY modification, etc.
According to the different needs of customers, we provide 3 versions for you to choose:
Function Description:
1. Bluetooth V4.2 version, support Bluetooth automatic reconnection technology, support WAV / WMA / FLAC /
APE / MP3 lossless decoding, stereo two-channel output.
2. 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 to Bluetooth
3. Module blue indicator:
When Bluetooth is not connected, the indicator flashes quickly;
When the Bluetooth is connected, the indicator light is always on;
When Bluetooth is playing, the indicator flashes slowly.
The following is the introduction of each version:
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Summary of Contents for Mantech MH-M18
- Page 1 1. Bluetooth V4.2 version, support Bluetooth automatic reconnection technology, support WAV / WMA / FLAC / APE / MP3 lossless decoding, stereo two-channel output. 2. 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 to Bluetooth 3.
- Page 2 MH-M18: The module interface uses a half-hole process, and the customer can directly patch or weld it on the board. NAME FUNCTION Button control terminal (4 button functions, need to add additional resistance Mute control terminal (output high level 3.3V when...
- Page 3 M28： NAME FUNCTION 5VDC GROUND Li BATTERY IN : 3.7-4.2V VBAT LEFT CHANNEL OUTPUT RIGHT CHANNEL OUTPUT AUDIO GND AGND 1. Power supply: You can directly use the MICRO USB Android cable 5V for power supply, or you can also connect a 5V power supply or a 3.7V lithium battery. Note that the 5V and 3.7V power supply interfaces are different.
- Page 4 If the loss is caused by improper use, our company will not bear any responsibility! Another: When using MH-M18, please pay attention to the following two points: Power supply: 5V power supply is used by default. If you need to use 3.7V lithium battery power supply,...
- Page 5 The very high power requirements of the Bluetooth audio module will affect the quality of the audio. It is recommended to add an LC filter circuit, especially switching power supply (such as mobile phone charger, etc.). MUTE mute port: when this module is muted, this port outputs a high level of 3.3V and a low level of 0V during playback.
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