CLM920_AC3 Module Hardware Usage Guide
Shanghai Yuge Information Technology co., LTD
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It can also be set to flight mode by AT+CFUN. For details, please refer to CLM920 AC3 AT
command set.
3.9 Status indication interface
The CLM920 AC3 module provides three GPIO pins to indicate module status.
Table 3-16 Network indication pin definition
Pin
Name
I/O
Description
5
NET_MODE
DO
4G network indication, function developing
6
NET_STATUS
DO
Network indication
61
STATUS
DO
Module status indication
Table 3-17 Network operation status indication
status
LED display status
Module registration failed
Constantly bright
Module registration 4G or registration 3G for data service Flashing
Table 3-18 Module status indication
Module power on status indication
Pin level
Boot
low
其他
High resistance
The module network indicator reference design is as follows：
Figure 3-19 Network indicator circuit diagram
