** CSR8645 : Bluetooth 4.1 aptX ** QCC3034 : Bluetooth 5.0 aptX, aptX HD
1. DC power input interface, GND for the power supply negative, +12 V for the power supply positive. Wide voltage: 6-36V 2. AUX audio interface, LINE_INR right channel input, GND common ground, LINE_INL left channel input 3. Audio output interface, R_OUT right channel output, GND common ground, LINE_OUT left channel input 4. Audio switching relay, NEC original import, 5. Bluetooth antenna for receiving signals 6. Bluetooth work light 1 7. Bluetooth work light 2 8. Support aptX Audio lossless signal reception