Operating Status Led - SimCom SIM340DZ User Manual

SIM340DZ EVB User Guide

3.6 Operating Status LED

Working state of status LED as list:
Name Description
M1 VBAT ON/OFF indicator
M2 GSM_NET status indicator
M3 GSM part status indicator
SIM340DZ-EVB_UGD_V2.01
Figure 9: StatusLED
STATUS
Bright：VBAT ON;
Extinct: VBAT OFF
Blinking at a certain frequency according various GSM net status
Bright: Module runs normally
Extinct: System
unconventionally
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is powered down or module runs