GT-541 User manual
Publication Jun, 2012 Ver.1.03
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2.4 LED Indicators
There are three LED indicators to help users to judge the various conditions in the
GT-541. The description is as the following:
(1) EXT (Red): The External Power LED indicated status whether the power is
supplied or not. The description is as the following:
The Power is active
The Power is not active
On Off
(2) GSM (Green): The modem LED can indicate the status of GSM module.
GSM module normal
GSM module failed
Blinking (3 sec)
Off
Or
Blinking (not 3 sec)
(3) STA (Orange): The system LED indicated whether the GT-541 is normal of
failed.
First Use
No connected to VxServer
Successful
connection
Wrong PIN/PUK code
Off
On
Blinking (1 sec)
Blinking (50 ms)