Bluetooth 4.2 Audio RX Module – 2x5W
Stereo Bluetooth 4.2 RX module with amplified output, designed to build wireless audio reception into audio systems and wired speakers.
SKU 8300-MHM38EAN 5410329557812Bluetooth modules
Description
Stereo 2-channel MH-M38 Bluetooth 4.2 RX module designed to build wireless Bluetooth connectivity into wired audio systems.
It supports 2-channel stereo transmission with built-in audio decoding, for stable playback that works with the main music formats. Once switched on it is detected as device MH-M38 and allows automatic pairing with smartphones and Bluetooth sources, with no further configuration.
The module has a status LED that shows what the system is doing, from device search through to active connection and audio playback. Wireless range reaches up to 20 metres in open space, which makes it suitable for installations further away from the source too.
It is a good choice for upgrading amplifiers, loudspeakers, Hi-Fi systems and DIY projects, and for automotive work, where wired audio has to be turned into wireless simply and compactly.
Main features
- Bluetooth V4.2 with automatic connection
- Support for WAV, WMA, FLAC, APE and MP3 audio formats
- Lossless audio decoding
- Dual-channel stereo output
Applications
- Wireless audio streaming, to turn wired systems into Bluetooth devices
- Upgrading home audio systems with wireless connectivity
- Integration into car audio systems for music streaming from a smartphone
- Building DIY projects for custom Bluetooth speakers
PINOUT
- +5V: positive supply 5V
- L+ / L−: left channel output (direct speaker connection)
- R+ / R−: right channel output (direct speaker connection)
Technical details
| Current draw in operation | 20 mA |
|---|---|
| Deep sleep mode | 3 µA |
| Wireless range | up to 20 m (in low-interference conditions) |
| Receive sensitivity | -87 dBm |
| Dimensions | 45 × 20 × 5 mm |
| Weight | 7 g |
| GND | supply ground |
| VBAT | Li-ion battery input 3.7–4.2V |










