Product Description
Paramenters
This product MH-M18/M28/M38 is a low-power BLE design solution that supports the latest BLE 4.2 transmission and dual-channel stereo lossless playback. After the module is connected to BLE , BLE wireless transmission can be quickly realized, which is very convenient. In an open environment, the Bluetooth connection distance can reach 20 meters.Widely used in various BLE audio reception, various audio DIY modifications, etc.
| Function/Model | M18 | M28 | M38 |
| MICRO power supply | × | √ | √ |
| Audio headphone jack | × | √ | × |
| Built-in power amplifier | × | × | √ |
| Lithium battery power supply | √ | √ | √ |
| Support USB sound card, no drive | × | × | √ |
| Volume memory/adjustment | √ | × | × |
| MUTE Mute interface | √ | × | × |
| Key extension | √ | × | × |
| BLE version | BLE v4.2 | ||
| Support BLE protocol | HFPV1.7,A2DPV1.2, AVRCPV1.5,AVCTPV1.2,AVDTPV1.2 | ||
| Format support | Support WAV/WMA/FLAC/APE/MP3 lossless decoding, stereo dual-channel output | ||
| Operating voltage | 5V/3.7V-4.2V | ||
| The broadcast status is not connected | 5.5MA | ||
| Connection status | 20MA | ||
| Deep sleep | 3uA | ||
| Transmission distance | 20 m (open or low disturbance environment) | ||
| Operating temperature | -40°C to +85°C | ||
| Sensitivity | -87dbm | ||
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