Board size : 24mm X 19mm X 3mm
Operating voltage range : 4.1V~5V
The module has stereo output, simple built-in bluetooth antenna structure, 5V power supply voltage, and bluetooth connection function is added to active speaker.
The 7PIN output interface is 2.54 through holes, and the 7PIN output interface is: +power supply, ground, left channel, right channel, mute, LED status indication, reserved port.
The state port of the LED is connected with a 100-ohm resistance series LED indicating that it is connected to the ground. When bluetooth is not connected, it is flash. When bluetooth is connected successfully, it is slow flash.