MH-M18 Bluetooth 4.2 Decoder Board Audio Receiver BT4.2
The Bluetooth 4.2 Decoder Board Audio Receiver BT4.2 is a compact and efficient solution for adding Bluetooth audio streaming capabilities to various audio systems. Supporting Bluetooth 4.2, it ensures reliable wireless transmission with a range of up to 20 meters. The module supports multiple audio formats, including WAV, WMA, FLAC, APE, and MP3, delivering stereo two-channel output for high-quality sound reproduction. Its low power consumption and small form factor make it ideal for integration into DIY audio projects, portable speakers, and car audio systems.
Features
- Bluetooth 4.2 technology for stable and efficient wireless audio streaming.
- Supports lossless audio formats: WAV, WMA, FLAC, APE, and MP3.
- Stereo two-channel output for high-quality sound.
- Compact design with dimensions of 23mm × 16.5mm × 3mm.
- Low power consumption with a maximum operating current of 20mA.
- Operating voltage range of 3.7V to 5V DC.
- Transmission distance of up to 20 meters in open environments.
- Operating temperature range from -40°C to 85°C.
- Sensitivity of -87dBm for reliable signal reception.
- Supports Bluetooth protocols: HFPV1.7, A2DPV1.2, AVRCPV1.5, AVCTPV1.2, AVDTPV1.2.
Specifications
| Parameter | Value |
|---|---|
| Model | MH-M18 |
| Bluetooth Version | 4.2 |
| Operating Voltage | 3.7V–5VDC |
| Max Operating Current | 20mA |
| Transmission Distance | 20meters |
| Operating Temperature | -40°C to 85°C |
| Sensitivity | -87dBm |
| Dimensions | 23mm x 16.5mm x 3mm |
PINOUT
| Pin | Function | Description |
|---|---|---|
| 1 | KEY | Button control terminal (4 button functions, additional resistors as shown in wiring diagram) |
| 2 | MUTE | Mute control terminal (output high level 3.3V when muting, output low during playback) |
| 3 | VCC | Positive power supply 5V (requires short circuit diode for 3.7V lithium battery) |
| 4 | GND | Power negative / audio signal ground |
| 5 | L | Left channel audio output |
| 6 | R | Right channel audio output |
Applications
- Wireless audio streaming for speakers and amplifiers.
- Bluetooth music receiver for home audio systems.
- DIY audio projects and custom sound systems.
- Car Bluetooth adapter for hands-free audio.
- Portable speaker integration for wireless music playback.
- Embedded audio solutions in smart devices.
- Wireless headphone adapters for audio upgrades.
Package Contents
- 1x Bluetooth 4.2 Decoder Board Audio Receiver BT4.2.
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