| bluetooth indicators | |
| bluetooth module | Built-in 1 bluetooth module,
can connect 1 bluetooth address audio at the same time |
| I/O module | Single channel input / output |
| bluetooth version | V5.0 |
| RF transmit power | 0dB (max 6dB ) |
| RF receiver sensitivity | -86dB |
| A2DP encoding method | APT-X , SBC |
| A2DP sampling rate | 44.1k |
| HFP sampling rate | 8K/16K |
| bluetooth protocol | A2DP , HFP , AVRCP , SPP |
| Device parameters | |
| Digital Audio Input Impedance | 50 ohms |
| Analog Audio Input / Output Impedance | Input 10k ohm ;
output 32 ohms |
| Communication UART format | Baud rate: 921600 ; data bits: 8 ; parity bit: N ; stop bit: 1 |