Introduction - If you have any usage issues, please Google them yourself
BLK-MD-SPP-A Bluetooth module AT command set. Users can communicate through the serial port and BLK-MD-SPP-A chip, serial port TX, RX two signal lines, the baud rate support and 120024004800960014400192003840057600115200230400460800 921600bps. The default serial baud rate is 38400bps.