GV55NUsermanual 
TRACGV55NUM001 ‐19‐
 
Note: 
1 - GSM LED cannot be configured. 
2 - GPS LED and PWR LED can be configured to turn off after a period of time using the 
configuration tool 
3 - Fast flashing is about 60ms ON/ 780ms OFF 
4 - Slow flashing is about 60ms ON/ 1940ms OFF 
3.11. MotionSensordirection
GV55N  has  an  internal  3-axis  accelerometer  supporting  driving  behavior  monitoring, 
power  conservation  and  motion  detection.The  following  is  the  direction  of  the  motion 
sensor.   
 
GSM 
(note1) 
Device is searching GSM network    Fast flashing   
(Note3) 
Device has registered to GSM network.    Slow flashing 
(Note4) 
SIM card needs pin code to unlock.  ON 
GPS 
(note 2) 
GPS chip is powered off  OFF 
GPS sends no data or data format error.  Slow flashing 
GPS chip is searching GPS info.    Fast flashing 
GPS chip has gotten GPS info.  ON 
PWR 
(note 2) 
No external power and  internal  battery voltage is 
lower than 3.35V. 
OFF 
No external power and  internal  battery voltage is 
below 3.5V. 
Slow flashing 
External power in and internal battery is charging  Fast flashing 
External  power  in  and  internal  battery  is  fully 
charged 
ON