GTLT2 USER MANUAL
Page 7 of 21
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3.3.2 Wiring Description：
3.3.3 Description of GTLT2 LED :
LED State Description
Green LED--- indicate the GPS signal state
State Means
No Lighting Working, but no location or GPS module has turn off.
Flashing Working and has located
Blue LED--- indicate the GSM signal state
State Means
flash slow(1 second on and 1 second off) no SIM card or not GSM net
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