PROFESSIONAL AVL GPS / GSM /GPRS Car/ Vehicle Tracker
1）System Introduction VT300 is a high-tech product through cooperation with mobile
operators. It combines GPS Global Positioning System and GSM/GPRS
communication system, which can clearly inform you the position
& situation of your car. GPS is the abbreviation for Global
Positioning System, which based on 24 position location satellites
around the earth orbit. Their locating precision can be kept within
10 to 15 meters. GSM is the second digital mobile communication
system (GPRS, second and fifth digital mobile communication
system), and at present it is the mobile communication system that
has the largest coverage and owns the most number of users. This
product combines GPS and GSM/GPRS technologies together. It usesGPS
system to locate your car, and sends the position/ situation report
back to you via GSM/GPRS communication system. With a delicate
microphone, you can monitor the present situation in your car from
a faraway place. You can use the telephone remote control function
to set monitoring mode, which will report the situation of your car
to you periodically. With this function, the vehicle owner will be
able to know the geographic coordinates, direction, and other
related information of the car anytime in any place. The report
methods can be via SMS short message service. You can also select a
one time report or continuous report (tracking function). （3）Main Function Position Report Function No matter where you are, when you want to know the position of
your vehicle, send a SMS message or make a telephone callto the
VT300; it will report its location back to you by SMS . Edit a
message as following format, then send it to VT300:
Tracking Function Tracking report function can be turned on or off according to the
requirements of the user. Tracking function will continually report
vehicle position until it get stop command .In this tracking module
, VT300 will send one position message at a preset time interval. Stop tracking function This function is used to turn off tracking report function. (4)Useful Tips GPS antenna is used to receive satellite signals in the sky. It
should be positioned at a place where it will have an unobstructed
view of the sky. The ideal location is top of the dashboard or
close to the rear window of the car. GPS antenna can pick up
signals through glass and plastic, but will not see the sky”
through metal or other conductive surfaces. To avoid distractions
of GPS signal, make sure the antenna is not covered or shielded by
any object containing metal, such as the metallic windshield. If
your car is with metallic windshield, please cut a hole on the
windshield above the place where you put the GPS antenna, so that
the antenna can receive the GPS signals.
