This product B30T B30M is a low-power Bluetooth design that supports the latest Bluetooth 5.0 transmission and two-channel stereo lossless playback. After the module is connected to Bluetooth, Bluetooth wireless transmission can be quickly realized, which is very convenient. In an open environment, the Bluetooth connection distance can reach 20 meters. Widely used in various Bluetooth audio reception, various audio DIY modifications, etc.

1. Power supply: You can directly use the MICRO USB Android cable 5V for power supply, or you can also connect an additional 5V power supply or 3.7V lithium battery (as shown in the figure below). Note that the power supply interfaces of 5V and 3.7V are different. The 5V voltage is connected to 5V and GND, and the 3.7V lithium battery is connected to VBAT and GND.

2. Audio output: The headset can be directly connected to the 3.5mm audio interface, or it can be connected to the audio input of the dry power amplifier board (the interface L/R/AGND as shown in the picture can be connected directly).