Geo fence is a special scope you preset according to GPS signal on the map. When the GPS tracker enters into or goes out this scope, it will send alarm to the preset center number or online GPS tracking platform.
The geo fence offers peace of mind for people.
When the car, pet, children, elderly leave out the geo fence you preset, you will receive alarm on your mobile phone. Then you could go to find them at once to prevent they lost.
There are 2 kind geo fences:
Now, we take our pet GPS tracker TE200 as an example to explain how to set circular geo fence
Users could send SMS command: Command: G+X, Y, Z, xxxM/KM to set geo fence.
X=No. of Geo fence (1~3), user can set 3 Geo fences
Y=0 means to turn off the function
Y=1 means to turn on the function
Z=1 means to set alarm when the pet GPS tracker enters the preset area
Z=0 means to set alarm when the pet GPS tracker breaches the district
xxx is the preset distance to the tracker’s original place, must be 3 digitals. M means meters, KM means kilometers
The pet GPS tracker will send the message to the authorized number as “Geo fence alarm! + GPS info” when it enter or go out the area you preset.
(User must set this function when the device has GPS fixed.)
To turn off this function, please send G1,0 or G2,0 or G3,0
The rectangle geo fence setting is more complicated than circular geo fence.
Now we take our car GPS tracker VT380 as an example to explain how to set a rectangle geo fence
SMS Command: W******,017,X or W******,117,X
Description: Turns on Geo-fencing alarm. When the car GPS tracker moves in/out the preset scope, it will send an SMS alarm to the authorized phone number for SOS.
Longitude: DDDMM.MMMM,E/W. 4 places of decimal. ‘0’ is needed to be stuffed if no value available.
Latitude: DDMM.MMMM,N/S. 4 places of decimal. ‘0’ is needed to be stuffed if no value available;
After send above sms command, you will get a GEO FENCE as following picture: