توضیحات محصول
For different needs of customers, we offer 3 versions for you to choose from:
Function / Model | M18 (Product ID: ۱۴۷۶۷۹۱) | M28 (this item) | M38 (Product ID: 1486746) |
Micro power supply | × | √ | √ |
Audio headphone jack | × | √ | × |
Built-in amplifier | × | × | √(۵W+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 | ۵V/3.7V-4.2V | ||
Broadcast status not connected | ۵٫۵MA | ||
Connection working status | ۲۰MA | ||
Deep sleeping | ۳UA | ||
Transmission distance | ۲۰ meters (empty or low interference environment) | ||
Operating temperature | -۴۰°C to +85°C | ||
Sensitivity | -۸۷dbm |
Introduction:
Widely used in a variety of Bluetooth audio reception, a variety of audio DIY modification.
Pin number | Pin header | Description |
۱ | ۵V | Power positive 5V |
۲ | GND | Negative power supply |
۳ | VBAT | Lithium battery positive 3.7-4.2V |
۴ | L | Left channel output |
۵ | R | Right channel output |
۶ | AGND | Audio ground |
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