Specification |
Function introduction USB 5V power supply, power on automatically activates Bluetooth. Support A2DP, HFP. (A2DP: Send the music played on the PC to the Bluetooth headset. Audio format: 44.1K sampling, dual channel, bit width 16bits. HFP: Bluetooth headset voice intercom. Audio format: 8K sampling, mono, bit width 16bits) Applicable scene The Bluetooth Protocol Stack is implemented on the dongle, regardless of the host. Only the host supports USB Auido, plug in the USB BT Dongle to send the host audio signal to the Bluetooth terminal device through Dongle. 1 button: Long press to enter the search state. 2) Bluetooth indicator display: 3 LEDs, idle (LED1 flashes slowly), can be paired (LED1 and LED2 alternately flash), connected (LED1 is on, LED2 is flashing). There is audio data transmission (LED1 is on, LED2 is off, LED3 is flashing). No button: Power on to Bluetooth, automatically search for Bluetooth devices. 2) Bluetooth indicator display: 1 LED light, idle (LED1 slow flashing), can be paired (LED1 flashing), connected (LED1 long bright), with audio data transmission (LED1 long bright). PC tool control: 1) PC tool controls Bluetooth status. (Using PC tool, communicate with Dongle through USB HID protocol) 2) Bluetooth indicator display: 1 LED light, idle (LED1 slow flashing), can be paired (LED1 flashing), connected (LED1 long bright), with audio Data transmission (LED1 is on). Parameters * Standard: Bluetooth 4.0 * Bluetooth protocol: A2DP, HSP, HFP * Usb standard: USB 2.0 * Output power: 0 ~ +4dBm * Receive sensitivity: -75dB * Bluetooth level: class2 * Transmission distance: 10M * Band: 2.4G ISM band * Connection method: Piconet / Scatternet Support * Audio decoding: 16bit codec * Working voltage: 5V |