Sleep Feature; Airplane Mode; Sim Cards - Digi XBee 3 Cellular LTE-M User Manual

Design recommendations
You can verify the state of the device using the AI command. After you issue the SD command and a
response has been returned (either OK or ERROR), issue the AI command. If the shutdown was
successful, 2D is returned.

Sleep feature

The recommended approach is to use one of the available sleep configurations such as the
feature (SM=1) or sleeping through MicroPython (xbee.sleep_now()). When the module has gone to
sleep and the SLEEP pin (pin 13)
1. Initiate sleep: Assert SLEEP_RQ
2. Wait for sleep state to be entered: SLEEP pin (pin 13) low.
3. Power off the device.

Airplane mode

Change the XBee configuration to use Airplane mode (AM=1). This puts the XBee into a safe state for
shutdown.
1. Set AM=1.
2. Apply configuration change.
3. Wait 30 seconds to allow time for shutdown to occur.
4. Power off the device.
SIM cards
For best performance, use a SIM card with gold-plated contacts.
n
Because vibrations in your application environment may cause unexpected SIM card failures
n
due to fretting between the SIM card and the card holder, Digi strongly recommends that you
apply a thin layer of dielectric grease to the SIM contacts prior to installing the SIM cards.
Digi XBee® 3 Cellular LTE-M/NB-IoT Global Smart Modem User Guide
is low, power may safely be removed.
SIM cards
Pin Sleep
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