2.1 LED status (non-sleep mode)
2.1.1Red LED (Power/working status)
LED Status
Indication
Flash quickly (interval 0.1S)
Low battery
Flash slowly (interval 2s)
Full charge/Working
normally
Flash slowly (Flash 0.1s after
every 2s)
Working normally
Bright
Charging
Dark
Out of battery / Troubleshot
2.1.2 Blue LED
（
GPS signal status
）
LED Status
Indication
Flash quickly (interval 0.1s)
Searching GPS signal
Flash slowly (Flash 0.1s after
every 2s)
GPS signal has been
acquired successfully
Dark
GPS stops working
2.1.3 Green LED (GSM signal status)
LED Status
Indication
Flash quickly (interval 0.1s)
Receive GSM signal
normally
Flash slowly (flash 0.1s after
every 2s)
GPRS online
Bright
Incoming/outgoing calls
Dark
No GSM signal or no SIM
card installed
2.1.4 Defense Status Indication
While the three LEDs (blue/red/green) flash cyclically, it means the device begins to
enter defense status.
Note:
1. When it runs with battery, after GPS being located over 5s, all LEDs will be
automatically turned off.
2. If there is no operation over 20s when the LEDs are lightening, all LEDs will be
automatically turned off.
3. Short press SOS button could light LEDs and press again could close it.
3. Operation
3.1 Install/Remove the SIM card
