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Sim800l simcomBog'liq SIM800LNORMAL POWER DOWN
At this moment, AT commands can not be executed any more, and only the RTC is still active. Power down mode
can also be indicated by STATUS or VDD_EXT, which is at low level at this time.
For detail about AT command “AT+CPOWD”, please refer to document [1].
4.2.2.3. Over-Voltage or Under-Voltage Power Down
The module software monitors the VBAT voltage constantly.
If the voltage ≤ 3.5V, the following URC will be reported:
UNDER-VOLTAGE WARNNING
If the voltage ≥ 4.3V, the following URC will be reported:
OVER-VOLTAGE WARNNING
If the voltage < 3.4V, the following URC will be reported, and the module will be automatically powered down.
UNDER-VOLTAGE POWER DOWN
If the voltage > 4.4V, the following URC will be reported, and the module will be automatically powered down.
OVER-VOLTAGE POWER DOWN
At this moment, AT commands can not be executed any more, and only the RTC is still active. Power down mode
can also be indicated by STATUS or VDD_EXT, which is at low level at this time.
4.2.2.4. Over-Temperature or Under-Temperature Power Down
The module will constantly monitor the temperature of the module,
If the temperature ≥ +80℃, the following URC will be reported:
+CMTE: 1
If the temperature ≤ -30℃, the following URC will be reported:
+CMTE:-1
If the temperature > +85℃, the following URC will be reported, and the module will be automatically powered
down.
+CMTE: 2
If the temperature <
-40℃, the following URC will be reported, and the module will be automatically powered
down.
+CMTE:-2
At this moment, AT commands can not be executed any more, and only the RTC is still active. Power down
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