Doc. Title
ST940 User Manual
Concerning:
Rev.
Date (dd-mm-yy)
Page of Pages
Features and how to configure ST940
1.19
0
19-06-15
15
15 of 51
Blue& Red LEDs
(2 colors)
GSM network & Operating Status indicator
Right after the device is turned on, the blue LED starts to blink as below. Five (5) minutes
after the blue LED starts to blink, it is turned off automatically to save battery. If you press the
power button again, the blue LED will be on just for short time, for some seconds, to show
you the current status of the GSM network connectivity.
Network OK: 1 time
Server communication Error : 2 times
GPRS Communication Error : 3 times
No GSM (= not connected with the GSM network): 4 times.
SIM PIN Locked : 5 times
Impossible to connect with the GSM network : 6 times
No SIM Error (= an error when SIM is not available) : 7 times
In addition to the status described above, the blue LED continues to blink either if the device
has an error of SIM Locking or if it does not have a SIM. .
If you press
‘power button’ of device shortly, the Red LED indicates the operation status of the
device by showing number of blinking as below.
1 time of blinking means
status of Power Off
2 times of blinking mean
status of hibernation
3 times of blinking mean
status of Power Off and battery discharged. It means
that it is time to charge the battery
Battery LEDs
(3 colors)
Battery indicator
Normally, it blinks shortly to indicate the battery level for user as described below.
Red LED blinks twice shortly.
under 10% of the full capacity
Red LED blinks.
under30% of the full capacity.
Orange LED blinks.
30% to80%
Green LED blinks.
Almost charged
Green LED is on.
Charging has been completed.
During the charging time, the battery LED blinks continuously. But, the battery LED is turned
on when charging the battery is completed.