Specifications

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means that the module starts to restore the factory mode; Bluetooth
connection status, this command is not allowed
5.10 Custom product serial number
Command format: AT+SN=1234\r\n
Return value: OK\r\n
ERR:CODE\r\n
Content: The serial number of the custom product is in the broadcast data. If
it returns OK, it means that the custom addition was successful, and if it
returns ERR, it means that the addition failed. The possible reason is that the
custom data exceeds the serial number requirement. The module serial
number supports 0000-FFFF, and the default is FFFF. ; Bluetooth connection
status, this command is not allowed
5.11 Custom broadcast data
Command format: AT+MANU_DATA=1234\r\n
Return value: OK\r\n
ERR:CODE\r\n
Content: The user can add custom broadcast data to the Bluetooth broadcast
data. The maximum data length that can be added is 6 bytes; this command
is not allowed in the Bluetooth connection status
5.12 Transmit power setting command
Command format: AT+RFPM=3\r\n
Return value: OK\r\n