System overview :
Function key and port
LED indicators :
ID
LED
Status
Note
Solid on
GSM is invalid
Blinking
GSM is valid
1
GSM (blue)
Standby
Off
Solid on
GPS is invalid
Blinking
GPS is valid
2
GPS (orange)
Standby
Off
On
Connected 5V
3
Power (red)
Off
Not connect power
Power LED
Battery checking button
and Hang rope hole
GSM LED
Power switch
Speaker
SOS button
Microphone
Mini USB port
GPS LED
