M28 bluetooth 4.2 Audio Receiver Module With 3.5mm Audio Interface Lossless Car Speaker Headphone Amplifier Board Wireless Refit
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For different needs of customers, we offer 3 versions for you to choose from:
Introduction:
For different needs of customers, we offer 3 versions for you to choose from:
| Function / Model | M18 (Product ID: 1476791) | M28 (this item) | M38 (Product ID: 1486746) |
| 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-M28 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 | Left channel output |
| 5 | R | Right channel output |
| 6 | AGND | Audio ground |
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.
Package includes:
1 x M28 Module
1 x M28 Module
M28 bluetooth 4.2 Audio Receiver Module With 3.5mm Audio Interface Lossless Car Speaker Headphone Amplifier Board Wireless Refit See detail
