USER MANUAL
Page 7/ 16
页
HLK-B10
mode
；
Long press
（
More than 6s
），
release the button when the status LED starts flashing, the
module will restore
the default settings, and automatically restart.
4.3. Switching Between Transmission and AT Command Mode
4.3.1. From transmission mode to AT command mode
There are two ways to switch the transmission to AT command mode:
key mode
：
Pull down the fifth pin 50ms
～
1s
，
The module immediately enters the AT command mode.
In transmission mode,the serial port receives special format data to automatically exit
the transmission
：
When you are about to exit transmission mode, the serial port pauses the input 200ms to
ensure that the data in the serial port is sent empty, and then enter “+++”,After receiving the
reply "a", enter "a" and pause 200ms to ensure that there is no subsequent data input to exit
the transmission mode. Do not have any input before and after "+++"and “a”, including"\ r\
n "to avoid fault operation.
4.3.2. From AT instruction mode to transmission mode
Send command
：
AT+TS=1
The conversion logic for transmission mode and AT command mode is as following
：
