AT+CPWROFF. This command un-registers the modem from the network and switches it off.
When the battery is present (Option S0531B), a mechanism allows to stop completely the
application if the external power supply is unplugged, and also to prepare the modem for
storage or transport, in order to limit high discharges of the battery.
If the device is not used, it has to be deactivated by sending the following command:
If the device contains an application developed with EGM
Disconnect the external power supply of the modem.
And send the command AT+GPIOSET=35,0
If the device does not contain any embedded application, via the Boot-Loader menu
1 - Update application
2 - Erase objects
M - GSM direct access (external supply required)
A - Advanced
P - Power off
E – Exit
Disconnect the external power supply of the modem.
And Enter "P"
Important note: The switching of the battery and its auto-maintain will be automatically
reactivated once the device will be plugged again to its external power
supply.