Bluetooth 4.2 Wireless Audio Transmitter & Receiver Board Module

The Bluetooth 4.2 Wireless Audio Transmitter & Receiver Board Module is a Bluetooth module that will automatically search for connected devices, if not found, it will keep searching until it is found.

The key on the module is a multifunctional key

1. Long press will pause the play
2. Short press is to adjust the volume. The volume adjustment can be saved by power off and the volume adjustment is from large to small and then from large to small
3. The volume of Bluetooth transmission cannot be adjusted, if you want to adjust, you can only adjust the volume of the receiver end

This module supports Micro USB power supply and can be connected to the computer or a charger with an output voltage of 5V DC. There is also a battery interface on the board. Please pay attention to the positive and negative poles.

The paired device to this module has to go into pairing mode before it can be found by the transmitter of this module and the installation of this transmitter module cannot be surrounded by an iron shell, because the metal ash absorbs the wireless signal.

Setup Instructions

• Press and hold the botton to power up, and the mode of the Bluetooth transmitting and receiving will be switching over and over again
• The flashing state of the indicator light on power in the two mode is different. After the switch, the module will be automatically saved when the power is off

Bluetooth Receiving State:

• Short Press: Switch volume from small to large and saved when power is off
• Long Press: Switches the device mode from Bluetooth to AUX, AUK and then Bluetooth
• Indicator Light blinks Slowly

Bluetooth Transmitting State:

• Short Press: Switch Volume from large to small and from small to large and saved when power is off
• Long Press: Pause
• Indicator Light Flash

Product Parameters

• Power Supply: 3.7V Lithium-ion Battery or a Micro USB with 5V
• Working Current: 30mA
• Working Voltage: 3.3V - 5.5V DC
• Bluetooth Version: 4.2
• Bluetooth Distance: About 12M
• Feature Selection: Switch through the multifunctional button

Support Transmitting Audio Sources:

• Support 3.5mm Audio input dual channel transmission
• Support emitting U disk to play MP3 audio sources
• Support the sound source of USB sound card for transmitting electricity

Support Bluetooth Receiver:

• Support dual channel output. Left and Right channel stereo output
• Support 3.5mm external voice input
• Support to play U disk, MP3 and WAV file
• Support USB computer sound card and USB MIC