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Quectel EC25 User Manual

Quectel EC25
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LTE Module Series
EC25&EC21 AT Commands Manual
EC25&EC21_AT_Commands_Manual 11 / 231
1.6. Turn off Procedure
It is recommended to execute AT+QPOWD command to turn off the module, as it is the safest and best
way. This procedure is realized by letting the module log off from the network and allowing the software to
enter into a secure and safe data state before disconnecting the power supply.
After sending AT+QPOWD, do not enter any other AT commands. The module outputs message,
POWERED DOWN and sets the STATUS pin as low to enter into the shutdown state. In order to avoid
data loss, it is suggested to wait for 1s to switch off the VBAT after the STATUS pin is set as low and the
URC POWERED DOWN is outputted. If POWERED DOWN has not been received after 65s, the VBAT
shall be switched off compulsorily.

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Quectel EC25 Specifications

General IconGeneral
CategoryLTE Module
LTE TDDB38/B40/B41
WCDMAB1/B5/B8
GSM850/900/1800/1900 MHz
Data ratesLTE Cat 4: 150 Mbps DL/50 Mbps UL
GNSSGPS/GLONASS/BeiDou/Galileo/QZSS
Operating Temperature-40°C to +85°C
Form FactorLCC
Storage Temperature-45°C to +90°C
SIM Interface1.8V/3.0V
Antenna InterfaceMain, Diversity, GNSS
LTE FDDB1/B3/B5/B7/B8/B20
InterfacesUSB 2.0, UART, PCM, GPIO
Operating Voltage3.3V - 4.3V
ProtocolsTCP/IP, UDP, FTP, HTTP, HTTPS
CertificationsCE, FCC, PTCRB, GCF, RCM, IC

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