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4.4 LED indicators
There are two LED indicators to help users to judge the various conditions of GTM-201.
The description is as follows：
PWR(Red)：The PWR LED can indicate the status of Power module.
Power normal
Always on
GSM (Green)：The modem LED can indicate the status of GSM module.
Modem normal
Blanking (3 sec)
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Power fail
Always off
Blanking (not 3 sec)
12
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GTM-201 Series User Manual
Modem fail
Off
or
Publication Jul, 2013 Ver. 1.06
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