AT Command Handbook-V1.0
Last revision 2026/01/24
The AT Command Handbook V1.0 covers how to use the AT+CFUN command to adjust module functionality for power saving. It explains the Minimum Functionality Mode, Full Functionality Mode, and Flight Mode, detailing how each affects the module's power consumption and operation.
Power Save Mode
Minimum Functionality Mode
Minimum functionality mode means to reduce the module’s functions to least so as to minimize the current consumption. Use “AT+CFUN=” command to set the module to this mode. The command provides three options for setting different functions:
- AT+CFUN=0: Minimum Functionality Mode. Under this mode, serial port can still be used, but the RF and SIM card function and part of the AT commands will be disabled.
- AT+CFUN=1: Full Functionality Mode. (default)
- AT+CFUN=4: Flight Mode. Under this mode, serial port can still be used, but RF function and part of AT commands will not be accessible.
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