This stereo Bluetooth receiver module in version 4.2 offers excellent design quality for a very low price. Bluetooth version 4.2 provides very good data rate and transmission stability for high quality sound reproduction. At the output, the module offers a 3.5mm stereo jack connector and a 2.54mm 3-pin XH connector. A clock allows the synchronization of audio signals for a limited jitter. The module also has a U.FL type connector to connect an external antenna to extend the reception distance. The module can be powered by 5V DC on its Micro USB connector or 5V DC and up to 35V DC on its bare wire connector. The PCB has a blue status LED indicating the following statuses:
- fast blinking : wait for pairing
- Slow blinking : reading audio file
- Fixed : Connected to device