LN‑BT02 Stereo Smart Bluetooth 4.0 Audio Receiver Module
Description:
Wireless stereo audio receiver module supporting Bluetooth version 4.0 + EDR. Enables streaming music and hands-free calling from phones and computers. Equipped with built-in echo cancellation and intuitive control features for DIY audio projects.
Key Features:
- Bluetooth 4.0 + EDR with A2DP, AVRCP (1.3), HFP (1.5) support
- Wireless range up to ~15 m
- ANC echo cancellation and AEC noise reduction for clear hands-free communication
- Supports volume up/down, play/pause controls via integrated buttons
- Automatic reconnection to previously paired devices
- Wide input voltage range: 3.6–30 V DC
- Outputs analog audio at >600 mV for amplifier compatibility
Technical Specifications:
| Feature | Specification |
|---|---|
| Bluetooth Version | 4.0 + EDR |
| Protocol Support | A2DP, AVRCP 1.3, HFP 1.5 |
| Transmission Power | Class 2 |
| Wireless Range | ~15 m |
| Supply Voltage Range | 3.6–30 V DC (e.g. 5 V to 24 V) |
| Frequency Response | 80 Hz – 22 kHz |
| Signal-to-Noise Ratio (SNR) | >80 dB |
| Audio Output Level | >600 mV |
| Stereo Separation | >50 dB |
| Channel Balance | <2 dB |
| Board Dimensions | ~50 × 41.5 mm |
| Module Weight | ~30 g |
Usage Notes:
- Ideal for DIY speaker systems or amplifier integration via analog output.
- Provide a stable DC power supply between 3.6 V and 30 V, polarity protected.
- Use onboard play/pause and volume buttons to control audio playback.
- Equipped with high-stability Bluetooth chip and automatic reconnection on power-up.
- Built-in ANC and AEC circuits ensure clear, echo-free calls.
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