5.3 Ask coordinates
SMS “
WHERE#
” to the device Then the device will activate GPS. If GPS is located in 5
minutes, the device will reply coordinates SMS: Lat
：
23.008618
，
Lon
：
E114.393686
，
Course
：
120
，
Speed
：
53.02
，
Data Time
：
10-04-12 14
：
52
：
36
or the device will reply last location coordinates.
6
．
common SMS commands:
6.1 Set GPS Sleep interval parameters
Command Format:
TIMER,GPS sleep interval #
Interval range :1-300 minutes, 30minutes as default.
Example
：
TIMER,30#
It means the GPS sleep interval is 30 minutes.
When the GPS interval is set as 0 minute, it means the GPS timing positioning function is
off.
6.2 Time Zone Setting
Command Format:
GMT,E/W,Time zone number#
E
：
East
；
W
：
West
Time Zone number
：
0-12
Example
：
GMT,W,8#
It means 8th West time zone.
6.3 Factory Reset
SMS command:
FACTORY #
The device will reply “OK”, It means all parameters are set to default.