Operating Status Led - SimCom SIM300D User Manual

SIM300D 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
SIM300D-EVB_UGD_V1.01
Figure 9: StatusLED
STATUS
Bright：VBAT ON;
Extinct: VBAT OFF
No used
Bright: Module runs normally
Extinct: System
unconventionally
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is powered down or module runs