1、Bluetooth audio receiver board is mainly used for devices that do not carry Bluetooth functions. 2、Using Bluetooth 5.0 master chip JL6925A, true wireless stereo music sound 5.0 chip. 3、Support automatic connection back function, support WAV+APE+FLAC+MP3 lossless decoding. 4、Standard 3.5mm interface, stereo sound source, can be plugged into headphones, amplifiers and other equipment. 5、With LED indicator, blue light in Bluetooth mode, support universal Micro USB 5V power supply. Item Type: Bluetooth Audio Receiver Board Material: ABS+PCB Power Supply: 3.7-5V Signal to Noise Ratio: 90dB THD + N: -70 Decibels Crosstalk: -86dB Signal to Noise Ratio: 91dB Support Configuration File: A2DP / AVCTP / AVDTP / AVRCP / HFPLOS: > 15m USB power supply: Universal Micro USB 5V power supply Power Supply: External 3.7-5V lithium battery power conversion LED Indicator: Blue light in bluetooth mode 3.5mm Stereo Audio Interface: Standard 3.5mm interface, output stereo sound source, insert headphones, connect amplifier and other equipment How to Use: After turning on the power, the blue indicator light is on and enters the Bluetooth mode; the English "Bluetooth device is ready for pairing" is displayed on screen, indicating that it has entered the Bluetooth mode and is waiting for pairing; the "XY_BT" searched by the mobile phone's Bluetooth is the decoder board The name of the device. Click connect, the decoder board prompts "Bluetooth device connection is successful", indicating that the decoder board is successfully connected to the mobile phone and can play music. 1 x Audio Receiver Board 1 x USB Cable 1 x 3.5mm Cable