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SIM800C_Hardware_Design_V1.00 37 2014-10-30
“AT+CADC” to read the voltage value. For details of this AT command, please refer to document [1].
Table 20: ADC specification
4.10. Network Status Indication
Table 21: Pin definition of the NETLIGHT
The NETLIGHT pin can be used to drive a network status indication LED. The status of this pin is listed in
following table:
Table 22: Status of the NETLIGHT pin
Not registered the network
Registered to the network
GPRS communication is established
Reference circuit is recommended in the following figure:
Module
NETLIGHT
VBAT
4.7K
47K
R
Figure 35: Reference circuit of NETLIGHT
Network Status Indication
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