User Manual

HC‐12WIRELESSRFUARTCOMMUNICATIONMODULEV2.4USERMANUAL
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⑧ AT+Uxxx
Set the data bits, parity bits and stop bits of UART communication. In the parity check bit,
N represents the non parity check, O represents the odd parity check, E represents the even parity
check. Stop, 1 on behalf of the 1 stop bit, 2 on behalf of the 2 stop, 3 on behalf of the 1.5 stop bit.
Example:
To set the UART communication format to 8 data bits, odd parity, 1 stop bit, please send the
module command "AT+U8O1", the module returns "OK+U8O1".
⑨ AT+V
Query module firmware version information, return the official website address and
firmware version.
Example:
Send the module command "AT+V", the module returns " www.hc01.com HC-12_V2.4 ".
⑩ AT+SLEEP
After receiving the command, the module enters the sleep mode when exiting AT command
mode, the operating current is about 22μA, and the module can not carry on the UART data
transmission. Once again into the AT command mode state, the module automatically exit the
sleep mode.
Example:
When no wireless data transmission, in order to save energy, you can send the module
command "AT+SLEEP", the module returns "OK+SLEEP".
⑪ AT+DEFAULT
The UART baud rate, UART communication channel, transmission mode restore factory
default.
Example:
Send the module command "AT+DEFAULT", the module returns "OK+DEFAULT", restore
the factory default value. The UART baud rate of 9600bps, C001, UART communication
channel for the transmission mode is FU3, transmit power is +20dBm.