User's Manual

6
Figure 2-1
3.4 Power on/Power off
Figure 2-2
Power on:

Press the Power key at least 3 seconds and release it to power on AT Plus 4E
device. Note that, the Power LED light will light for a moment and then turn off.
Power off:

Press the power key about 3 seconds; Power LED light will light for a moment and
then turn off, which indicates that AT Plus 4E device has been powered off.
Note: the user can not power off AT Plus 4E if the power key is disabled by
protocol.
4 Frequency
LTE Cat M1 and NB-IoT : FDD 1, FDD 3, FDD 8, FDD 20, FDD 28
GPRS/EDGE : 900MHz/1800MHz
GPS:1575.42MHz