Bluetooth 4.0 Audio Receiver Stereo Wireless Speaker Module

Bluetooth Audio Modifier has a built-in Bluetooth antenna structure that is simple, the power supply voltage is 3.7V~5V version selection, and active speakers increase Bluetooth connection function. Audio Power Amplifier Board has a 7PIN output interface spacing 2.54 through-hole, 7PIN output interface is: + power, ground, left a channel, right channel, mute, LED status indicator, and reserved port. The LED state port is connected with a 100-ohm resistor in series, LED indicates the ground connection, the Bluetooth is not connected and the flash is fast. After the Bluetooth connection is successful, it is slow flashing.