MeiTrack GT30i User manual

GPS
Personal
Tracker
User Manual
V7.1
GT30i

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Contents
1. Product Overview................................................................................................................. - 3 -
2. For Your Safety.................................................................................................................... - 3 -
3. GT30i Characteristics............................................................................................................ - 4 -
4. Getting Started.................................................................................................................... - 5 -
4.1 Hardware and Accessories ............................................................................................. - 5 -
4.2 View ........................................................................................................................... - 5 -
4.3 Functional Parts............................................................................................................ - 5 -
4.4 First Use...................................................................................................................... - 6 -
5. Change Password................................................................................................................. - 7 -
6. Time Zone........................................................................................................................... - 7 -
7. Track .................................................................................................................................. - 8 -
7.1 Track by SMS ............................................................................................................... - 8 -
7.2 Track by Calling ............................................................................................................ - 8 -
7.3 Track by Preset Interval................................................................................................. - 9 -
7.4 Google Earth and Google Maps ....................................................................................... - 9 -
7.5 Track by MS01/MS02 .................................................................................................... - 9 -
7.6 Track by GPRS (Meiligao Protocol) between Server and Tracker .........................................- 10 -
7.6.1 Set Tracker‟s GPRS ID ..........................................................................................- 10 -
7.6.2 Set APN .............................................................................................................- 10 -
7.6.3 Set IP and Port ...................................................................................................- 10 -
7.6.4 Set DNS Server IP (optional) ................................................................................- 10 -
7.6.5 Enable GPRS Tracking ..........................................................................................- 11 -
7.6.6 Set GPRS Interval ...............................................................................................- 11 -
7.7 Track by GpsGate ........................................................................................................- 11 -
8. Authorization......................................................................................................................- 11 -
9. Call Function ......................................................................................................................- 12 -
9.1 Receiving Phone Call ....................................................................................................- 12 -
9.2 Making Phone Call .......................................................................................................- 12 -
9.3 Volume Adjustment......................................................................................................- 12 -
10. Speeding Alarm ................................................................................................................- 12 -
11. Movement/Geo-fence.........................................................................................................- 12 -
11.1 Movement Alarm........................................................................................................- 12 -
11.2 Geo-fence Alarm........................................................................................................- 13 -
12. Track by Distance ..............................................................................................................- 13 -
13. Set Sensitivity of Tremble Sensor ........................................................................................- 14 -
14. Listen-in (Voice Monitoring) ................................................................................................- 14 -
15. Heartbeat.........................................................................................................................- 14 -
16. Track Log .........................................................................................................................- 14 -
16.1 Log by Interval ..........................................................................................................- 14 -
16.2 Auto Log when no GPRS .............................................................................................- 15 -
16.3 Format Buffer ............................................................................................................- 15 -
17. Power Down .....................................................................................................................- 15 -
18. Get IMEI ..........................................................................................................................- 16 -
19. Initialization .....................................................................................................................- 16 -
20. Password Initialization .......................................................................................................- 16 -
21. Parameter Editor ...............................................................................................................- 16 -
22. Copyright and Disclaimer ...................................................................................................- 17 -
Annex 1. SMS Command List ...................................................................................................- 17 -
Annex 2. Troubleshooting ........................................................................................................- 23 -
Contacts ................................................................................................................................- 24 -

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1. Product Overview
The GT30i is a GPS/GPRS based personal tracking device, which is compact and easy to use.
GT30i has inbuilt GPS module to obtain accurate position data and utilizes its GSM capability to send the
position data to a specified mobile phone or server base. This allows users to monitor people or pets using
the tracker.
GT30i supports two way voice communications. This communication can be activated either by the
guardian calling the tracker or the tracker holder activating the SOS button. The tracker can be configured
to report its location at preset intervals to the server base or mobile phone.
With internal memory, GT30i can store GPS coordinates when there is no GPRS connection. GPS
coordinates can also be stored at specified intervals when requested by the user.
GT30i has the following functions and features:
SMS and GPRS TCP/UDP Communication (Meiligao Protocol)
AGPS (with GSM Base Station ID)
Track on Demand
Show Location Directly on Mobile Phone
Track by Time Interval
Track by Distance
Two-way Audio
Listen-in (Voice Monitoring)
GSM Blind Area Memory
Internal Memory for Logging
Inbuilt Motion Sensor for Power Saving
SOS Panic Button
Movement Alarm
Geo-fencing Control
Low Battery Alarm
Speeding Alarm
GPS Blind Area Alarm (in/out)
Three Buttons for Making Phone Call and/or Sending Message
Built-in Super Magnet (optional)
2. For Your Safety
Read these simple guidelines. Not following them may be dangerous or illegal.
Switch on safely
Do not switch on GT30i when wireless phone use is prohibited or when it may

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cause interference or danger.
Switch off in hospitals
Follow any restrictions. Switch GT30i off near medical equipment.
Switch off in aircraft
Follow any restrictions. Wireless devices can cause interference in aircraft.
Switch off when refueling
Do not use GT30i when at a refueling point. Do not use near fuels or
chemicals.
Switch off near blasting
Follow any restrictions. Do not use GT30i when blasting is in progress.
Qualified service
Only qualified personnel can repair GT30i.
Water resistance
GT30i is not fully water resistant. Keep it dry. Use a waterproof bag if
necessary.
3. GT30i Characteristics
Items
Specifications
Charging Voltage
DC 4.2-5.5V/400mA (Mini USB port)
Internal Battery
Rechargeable and replaceable 1350 mAh battery (3.7V)
Dimension
77 mm × 51 mm × 25 mm
Weight
80g (with battery)
Operating temperature
-20°to 55°C
Humidity
5% to 95% Non-condensing
GSM module
Quad Band GSM 850/900/1800/1900Mhz
GPS Chipset
Latest GPS SIRF-Star III chipset
GPS Sensitivity
-159Db
GPS Frequency
L1, 1575.42 MHz
C/A Code
1.023 MHz chip rate
Channels
20 channel all-in-view tracking
Position Accuracy
10 meters, 2D RMS
Velocity Accuracy
0.1 m/s
Time Accuracy
1 us synchronized to GPS time
Default datum
WGS-84
Reacquisition
0.1 sec., average
Hot start
1 sec., average
Warm start
38 sec., average
Cold start
42 sec., average
Altitude Limit
18,000 meters (60,000 feet) max.
Velocity Limit
515 meters/second (1000 knots) max.
Acceleration Limit
Less than 4g
Jerk Limit
20 m/sec
Work time
55 hours in power-saving mode and 12 hours in normal mode
Memory
4MB flash memory
LED
3 LED lights to show power, GPS, GSM and other status
Button
3 buttons(SOS/B/C) for making phone calls and sending SMS

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4. Getting Started
This section will describe how to set up your GT30i.
4.1 Hardware and Accessories
GT30i is supplied in a box which includes:
GT30i with Battery
Earphone with Mic
Wall Charger
Car Charger
USB Data Cable
CD
4.2 View
Front View
Side View
Back View
4.3 Functional Parts
Your GT30i has four buttons and three LED lights, with three different colors to indicate the status of the unit.
Red LED - indicating battery status
Off
Power is off or charging is complete
Flashing (every 0.1 second)
Low battery

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On
Charging
Flashing (1 second on and 2 seconds off)
Working
Blue LED - indicating GPS status
On
One button is being pressed
Flashing ( every 0.1 second)
The unit is being initialized
Flashing (0.1 second on and 2.9 seconds off)
GT30i has a GPS fix
Flashing (1 second on and 2 seconds off)
GT30i has no GPS fix
Green LED - indicating GSM status
On
A call is coming in / A call is being made
Flashing ( every 0.1 second)
The unit is being initialized
Flashing (0.1 second on and 2.9 seconds off)
GT30i is connected to the GSM network
Flashing (1 second on and 2 seconds off)
GT30i is not connected to the GSM network
Buttons
Power On/Off Button
To turn on/off GT30i
SOS Button
To make a phone call and/or send an SMS to the preauthorized phone
number
Press it to receive an incoming call
Press it to increase volume during conversation
Call B
To make a phone call and/or send an SMS to the preauthorized phone
number
Press it to reject a call, cancel calling or complete a conversation
Call C
To make a phone call and/or send an SMS to the preauthorized phone
number
Press it to decrease volume during conversation
Other Connectors
Mini USB
Used for charging, firmware update, configuration on PC and exporting
stored data. (USB Data Cable or USB-to-Serial Adaptor is required for
firmware update, configuration and exporting stored data)
SIM Card
Insert SIM card here
Earphone Plug
For connecting earphone
Lanyard Loop
For connecting lanyard
4.4 First Use
Please read this manual before using your GT30i.
4.4.1 Ensure that your GT30i has a working SIM installed.
- Check that the SIM has not run out of credit (Test the SIM in a
phone to make sure it can send and receive SMS).
- Check that the SIM Lock code is turned off.
- If you require the function of sending an SMS location report to
the authorized phone number when it makes a call to the GT30i,
please make sure the SIM installed supports displaying caller ID.

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4.4.2 Charge the battery for at least 3 hours in power-off status
using the wall or car charger. You can also connect the tracker
directly to the computer by USB for charging. Red light is on
during charging and off when charging is complete.
4.4.3 Push the Power On/Off button to the ON side and wait for
about 20 seconds. The device will then enter standby mode. It is
suggested that you turn on the device outside of all buildings to
receive a better GPS signal.
Check that the Red LED (Battery) is flashing 1 second on and 2
seconds off.
Check that the Green LED (GSM) is flashing 0.1 second on and 2.9
seconds off.
Check that the Blue LED (GPS) is flashing 0.1 second on and for
2.9 seconds off.
5. Change Password
Command: W******,001,######
Description: Change user‟s password.
Note:
1. ****** is user‟s password and the default password is 000000. The tracker will only accept commands
from a user with the correct password. Commands with wrong password will be ignored.
2. ###### is the new password. Password should be 6 digits.
Example:
W000000,001,123456
W123456,001,999999
6. Time Zone
Command: W******,032,T
Description: Correct time to your local time.
Note:
1. Default time of the tracker is GMT.
2. This correction is applied to location reports by SMS and SMS alarms.
T=0, to turn off this function;
T=_[-32768,32767] to set time difference in minutes to GMT.
For those ahead of GMT, input the time difference in minutes directly.
For example, for GMT+8, W000000,032,480. (8 Hours is 480 minutes)
„-„is required for those behind GMT.

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For example, W000000,032,-120. (2 hours or 120 minutes behind GMT)
Example:
W000000,032,480
W000000,032,-120
7. Track
7.1 Track by SMS
- Track on Demand - Reply with longitude, latitude, speed and date
Command: W******,000
Description: To get the current location of the tracker, send this command as an SMS or make a telephone
call directly to the tracker. After doing so, the device will report its longitude and latitude by SMS with the
format as follows:
Latitude = 22 32 36.63N Longitude = 114 04 57.37E, Speed = 2.6854Km/h, 2008-12-24,01:50
Example:
W000000,000
- Track on Demand - Reply with a link to Google Maps
Command: W******,100
Description: Send this command to the tracker and you will receive an SMS with a http link. Click on the
link and the location will be shown directly on your mobile phone using Google maps. For example:
http://maps.google.com/maps?f=q&hl=en&q=22.540103,114.082329&ie=UTF8&z=16&iwloc=addr&om=1
Note: Only smart phones and PDAs support this function.
Example:
W000000,100
7.2 Track by Calling
Make a missed call to the tracker and it will report its longitude and latitude by SMS with the following
format:
Latitude = 22 32 36.63N Longitude = 114 04 57.37E, Speed = 2.6854Km/h, 2008-12-24,01:50

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7.3 Track by Preset Interval
Command: W******,002,XXX
Description: Set an interval for the tracker to continuously report its location by SMS.
Note:
1. XXX is the interval in minutes.
2. XXX=000 to turn off tracking by time.
Example:
W000000,002,030
In this example, the tracker will send location data back to your mobile phone every 30 minutes.
7.4 Google Earth and Google Maps
Download Google Earth from http://earth.google.com/.
Start Google Earth (For more information about Google Earth please refer to http://earth.google.com/) or
go to http://maps.google.com ).
Input the latitude and longitude that you received from the tracker by SMS and click the search button.
Google Earth or Google Maps will display the location for you.
Example:
When you receive: Latitude = 22 32 40.05N Longitude = 114 04 57.74E
Type as the following picture shows:
(Note: you should input the latitude and longitude as: 22 32 40.05N 114 04 57.74E)
And then you can find the location of your tracker:
You can also use local map software on PDA or car navigation device to input the coordinates.
7.5 Track by MS01/MS02
You can also see a physical location on a map with our GPS Tracking Software MS01 or MS02.
This software is available for purchase and can be used for tracking after proper configuration.

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Please refer to MS01/MS02 User Guide for more information.
7.6 Track by GPRS (Meiligao Protocol) between Server and Tracker
7.6.1 Set Tracker’s GPRS ID
Command: W******,010,ID
Description: Set a digital GPRS ID for the tracker.
Note: GPRS ID must not be over 14 digits.
Example:
W000000,010,00001
7.6.2 Set APN
Command: W******,011,APN,Username,Password
Description: Set APN details for the tracker.
Note:
1. APN username and password are optional. If no APN username and password are required, input APN
only;
2. APN defaulted as „CMNET‟;
3. APN + username + password should not over 39 characters.
Example:
W000000,011,CMNET,Meiligao,6688
W000000,011,CMNET
7.6.3 Set IP and Port
Command: W******,012,IP,Port
Description: Set the IP and Port of tracker for GPRS communication.
Note:
1. IP is your server‟s IP or the domain name.
2. Port: [1,65534].
Example:
W000000,012, 220.121.7.89,8500
W000000,012,www.meiligao.net,8500
7.6.4 Set DNS Server IP (optional)
Command: W******,009,DNS Server IP
Description: If the domain name you set by the last command (W******,012,IP, Port) doesn‟t work, your

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servers IP is not properly set. You can first use this command to set DNS Server IP (please check with your
DNS server provider for the DNS Server IP) and then redo the command W******,012,IP, Port.
Example: W000000,009,220.23.4.90
7.6.5 Enable GPRS Tracking
Command: W******,013,X
Description: Enable GPRS tracking function.
Note:
X=0, to turn off GPRS tracking (default);
X=1, to enable GPRS tracking via TCP;
X=2, to enable GPRS tracking via UDP.
Example: W000000,013,1
7.6.6 Set GPRS Interval
Command: W******,014,XXXXX
Description: Set time interval for sending GPRS packets.
Note:
XXXXX should be in five digits and in unit of 10 seconds.
XXXXX=00000, to turn off this function;
XXXXX=00001~65535, time interval for sending GPRS packet and in unit of 10 seconds.
Example: W000000,014,00060
In this example, the tracker will send every 600 seconds (10 minutes).
For more information regarding GPRS tracking please refer to GPRS Communication Protocol
7.7 Track by GpsGate
The GT30i supports GpsGate Software.
Please contact our company or GpsGate for more information for settings.
8. Authorization
Command: W******,003,F,P,T1 or W******,003,F,P,T1,T2 (optional)
Description: Authorize phone numbers for the buttons/inputs, receiving location reports, SMS alarms or
phone calls.
Note:
F=0, to turn off this function; (default)
F=1, only send SMS to the authorized phone number;
F=2, only call the authorized phone number;
F=3, both SMS and calling.
P=1, set an authorized number for SOS button (Input 1);
P=2, set an authorized number for B button (Input 2);
P=3, set an authorized number for C button (Input 3).
T1: Preset phone number. Max.16 digits.

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If you need to set different numbers for receiving SMS and phone call, you can use W******,003,F,P,T1,T2,
In this case T1 is the phone number for receiving SMS and T2 for receiving phone calls.
Example:
W000000,003,3,1,88888888
W000000,003,3,1,88888888,99999999
9. Call Function
You can use the earphone for conversation purpose.
9.1 Receiving Phone Call
Use your phone or mobile phone to call the tracker. When the tracker is receiving a call, the green LED light
will be on. Press SOS button to receive the incoming call or press Call B button to reject the call.
9.2 Making Phone Call
After you have authorized phone numbers for SOS/Call B/Call C button, you can press any of these buttons
to make a call to the preset phone number.
Press Call B button to cancel a calling or to end a conversation.
9.3 Volume Adjustment
During a conversation, press SOS button to increase the volume or press Call C button to decrease the
volume.
10. Speeding Alarm
Command: W******,005,XX
Description: Turn on speeding alarm. When the tracker speeds higher than the preset value, it will send an
SMS to the authorized phone number for SOS.
Note: XX is the preset value of speed and in 2 digits.
=00 , to turn off this function;
=[01, 20] (unit: 10Km/h).
Example: W000000,005,08
When the tracker‟s speed is over 80km/h, an SMS alarm will be sent out.
11. Movement/Geo-fence
11.1 Movement Alarm
Command: W******,006,X
Description: When the tracker moves out of a preset circle scope, it will send an SMS alarm to the

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authorized phone number for SOS.
Note:
1. X is the preset radii to the tracker‟s original place
=0, to turn off this function ;
=1, 30m
=2, 50m
=3, 100m
=4, 200m
=5, 300m
=6, 500m
=7, 1000m
=8, 2000m
2. Radii: [1, 4294967295] meter(s), suggest to be set above 100 meters;
3. GPRS command is 0x12.
Example: W000000,006,1
When tracker moves out of this circle scope, it will send out an SMS alarm.
11.2 Geo-fence Alarm
Command: W******,302,X
Description: Turns on Geo-fencing alarm. When the tracker moves in/out the preset scope, it will send an
SMS alarm to the authorized phone number for SOS.
Note:
1. X is the parameters which includes: latitude, longitude, radii, in, out.
2. Latitude and longitudes should be in ASCII format as follows:
Latitude is ddd.dddddd, „0‟ is needed to be stuffed if no value available. „-‟should be added for south.
Longitude is dd.dddddd, „0‟ is needed to be stuffed if no value available. „-‟should be added for west.
3. Radii: [1, 4294967295] meter(s), suggested to be set above 100 meters, if set above 8, it is
corresponding radii.
4. If In and Out are 0, corresponding function is invalid. If In and Out are 1, valid.
5. Reply as Geo-Fence Alarm.
6. GPRS exiting command is 0x12, entering command is 0x13.
7. Send W******, 302 to turn off Geo-fence function.
Example:
W000000,302,22.000000,-114.123456,3000,1,1
Remarks:
1. Only one alarm can be set in either In or Out;
2. Only one alarm can be set in either Movement Alarm or Geo-fence Alarm.
12. Track by Distance
Command: W******,303,X
Description: Send this command to set distance interval.

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Note:
1. X= [1, 4294967295], suggested to be set above 300 meters;
2. X=0, turn off.
Example: W000000,303,1000
13. Set Sensitivity of Tremble Sensor
Command: W******,035,XX
Description: Send this command to set sensitivity of tremble sensor.
Note:
1. XX=[1,255], it will be more sensitive if XX is smaller;
2. Default value is 30.
Example: W000000,035,30
14. Listen-in (Voice Monitoring)
Command: W******,030,T
Description: Authorize a phone number to make a silent call to the tracker. The tracker answers the call
automatically and allows the caller to listen to what is happening around the tracker. With this feature, there
is no voice indication that the call is in progress.
Note:
1. T is the telephone number for wiretapping with a max. of 16 digits.
2. Calls from unauthorized number are treated as normal incoming calls and indicated by beeps.
Example:
W000000,030,88888888
15. Heartbeat
Command: W******,015,data
Description: Set an interval for heartbeat.
Note:
data is the interval in unit of minutes.
data=0, to turn off this function;
data=1~65535, set interval for heartbeat.
Example:
W000000,015,10
In this example, the tracker will send heartbeat every 10 minutes.
16. Track Log
16.1 Log by Interval
Command: W******,031,X

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Description: Set time interval for logging GPS information. Log information is stored within the device
memory. When the memory gets full, the newest record will be overwritten on top of the oldest (FIFO - First
In, First Out). In this case, only the newest information is stored.
Note:
1. X=0, to turn off this function. X=[1, 65535] to set interval in the unit of second.
2. The logged message is in GPRMC format and includes:
Date and time
Longitude
Latitude
Speed
Direction
3. All data, stored within the memory, may be exported to the PC using the USB connector. To do this, the
“GPSLog” program has to be used (please refer to GPSLog User Guide and GPRS Communication
Protocol for more information).
4. The device has 4MB of internal memory space for storing the track log. The Device is able to store up to
180,000 records within the memory.
Example:
W000000,031,60
The tracker will store GPS data every 60 seconds.
16.2 Auto Log when no GPRS
When there is no GPRS connection, the tracker can store all GPS information triggered by preset tracking
interval, alarms, request, or button activation in its internal memory. The tracker will send this information
(FIFO - First In, First Out) to server by GPRS or preauthorized mobile phone by SMS when GPRS connection
recovers.
The interval memory can store up to 1500 SMS and 4600 GPRS message.
16.3 Format Buffer
Command: W******, 503
Description: This command clears the data stored in the buffer.
Note: Deleted data can no longer be recovered.
Example: W000000,503
17. Power Down
Command: W******,026,XX
Description: This command puts the tracker in power down mode when it is inactive or immobile for a
period of time. In Power Down mode, GPS stops working while GSM enters sleep mode and stops sending out
messages. The device remains in this mode until it is activated by message, incoming calls, movement, or
triggered by three buttons.
Note:
XX=00, to turn off this function;

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XX=01~99, to turn on Power Down after a specified period of being inactive (or stationary). It is in unit of
minute.
Example: W000000,026,10
The tracker will enter power down mode after it is inactive (or stationary) for 10 minutes.
18. Get IMEI
Command: W******,601
Description: Get IMEI of the tracker. IMEI is 15 digits.
Example: W000000,601
19. Initialization
Command: W******,990,099###
Description: This sets all settings (except for the password) back to factory default.
Note: Send SMS “Default?”to the device. Within 120 seconds, send this SMS command to the tracker.
### is the ending character and is required in the text message.
Example: W000000,990,099###
20. Password Initialization
Command: W888888,999,666
Description: This resets the password back to factory default and can be used in case you forget your
password.
Note: Send SMS “Default?”to the device, and then, within 120 seconds, send this SMS command to the
tracker to set the password back to factory default (000000).
If you have set an authorized telephone number, when the password has been successfully preset the
telephone will receive W888888,999,666
Example: W888888,999,666
For more details regarding SMS commands, please go to Annex 1 Command List.
21. Parameter Editor
The tracker can also be configured by computer using the Parameter Editor. This method is much easier and
user friendly.

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Please refer to MEITRACK Parameter Editor for more information.
22. Copyright and Disclaimer
© Shenzhen Meiligao Electronics Co., Ltd. All rights reserved.
The information contained herein may be changed at any time without prior notification. This manual nor
any parts thereof may not be reproduced for any purpose whatsoever without written consent of Meiligao,
nor transmitted in any form either electronically or mechanically, including photocopying and recording.
In no event shall Meiligao be liable for direct, indirect, special, incidental, or consequential damages
(including but not limited to economic loss, such as loss of profits, loss of use of profits, loss of business or
business interruption, loss of revenue, loss of goodwill or loss of anticipated savings) arising out of the use
or inability to use the product or documentation, even if advised of the possibility of such damages.
Annex 1. SMS Command List
Note: ****** is user‟s password and the default password is 000000. The tracker will only accept
commands from a user with the correct password. Commands with wrong password will be ignored.
Description
SMS Command
Example
Track on Demand
W******,000
W000000,000
Remarks: To get the current location of the tracker, send this command as an SMS or make a telephone call directly to the

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tracker. After doing so, the device will report its longitude and latitude by SMS with the format as follows:-
Latitude = 22 32 36.63N Longitude = 114 04 57.37E, Speed = 2.6854Km/h, 2008-12-24,01:50
Track on Demand
-Google Link
W******,100
W000000,100
Remarks: Send this command to the tracker and you will receive an SMS with a http link. Click on the link and the location will
be shown directly on your mobile phone using Google maps. For example:
http://maps.google.com/maps?f=q&hl=en&q=22.540103,114.082329&ie=UTF8&z=16&iwloc=addr&om=1
(Note: Only smart phones and PDAs support this function.)
Change Password
W******,001,######
W000000,001,123456
Remarks: To change user‟s password. ###### is the new password. Password should be 6 digits.
Track by Interval
W******,002,XXX
W000000,002,030
Remarks: To set interval for automatic timed report.
XXX is the interval in minutes. If XXX=000 to turn off tracking by time.
In this example, the tracker will send location data back to your mobile phone every 30 minutes.
Authorization
W******,003,F,P,T1
(W******,003,F,P,T1,T2)
W000000,003,3,1,88888888
W000000,003,3,1,88888888,99999999
Remarks: Authorize phone numbers for the buttons/inputs, receiving location reports, SMS alarms or phone calls.
Note:
F=0, to turn off this function; (default)
F=1, only send SMS to the authorized phone number;
F=2, only call the authorized phone number;
F=3, both SMS and calling.
P=1, set an authorized number for SOS button (Input 1);
P=2, set an authorized number for B button (Input 2);
P=3, set an authorized number for C button (Input 3).
T1: Preset phone number. Max.16 digits.
If you need to set different numbers for receiving SMS and phone call, you can use W******,003,F,P,T1,T2, In this case T1 is
the phone number for receiving SMS and T2 for receiving phone calls.
Note: VT310 doesn‟t support two-way conversation. Calling only gives ring and reminder to the authorized phone.
Speeding Alarm
W******,005,XX
W000000,005,08
Remarks: When the tracker speeds higher than the pre-set value, it will send an SMS to the authorized phone number for SOS.
XX is the preset value of speed and in 2 digits.
=00 , to turn off this function;
=[01, 20] (unit: 10Km/h).
In this example, when the tracker‟s speed is over 80km/h, an SMS alarm will be sent out.
Movement Alarm
W******,006,X
W000000,006,6
Remarks: When the tracker moves out of a preset circle scope, it will send an SMS alarm to the authorized phone number for
SOS.

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X is the preset radii to the tracker‟s original place
=0, to turn off this function
=1, 30m
=2, 50m
=3, 100m
=4, 200m
=5, 300m
=6, 500m
=7, 1000m
=8, 2000m
Geo-fence Alarm
W******,302,X
W000000,302,22.000000,-114.123456,3000,1,1
Remarks: Turn on Geo-fencing alarm. When the tracker moves in/out the preset scope, it will send an SMS alarm to the
authorized phone number for SOS.
Note:
1. X is the parameters which includes: latitude, longitude, radii, in, out.
2. Latitude and longitude should be in ASCII format as follows:
Latitude is ddd.dddddd, „0‟ is needed to be stuffed if no value available. „-‟should be added for south.
Longitude is dd.dddddd, „0‟ is needed to be stuffed if no value available. „-‟should be added for west.
3. Radii: [1, 4294967295] meter(s), suggested to be set above 100 meters, if set above 8, it is corresponding radii;
4. If In and Out are 0, corresponding function is invalid, if In and Out are 1, valid;
5. Reply as Geo-Fence Alarm;
6. GPRS exiting command is 0x12, entering command is 0x13;
7. Send W******, 302 to turn off Geo-fence function.
Track by Distance
W******,303,X
W000000,303,1000
Remarks: Send this command to set distance.
Note:
1. X= [1, 4294967295], suggested to be set above 300 meters;
2. X=0, turn off.
Extended Functions
W******,008,ABCDEFGHIJ##
#
W000000,008,1011100011###
Remarks:
A=0, turn off the function of sending SMS location report after a phone call is made to the tracker;
A=1, turn on the function of sending SMS location report after a phone call is made to the tracker.
B=0, location data of NMEA 0183 GPRMC will be interpreted into normal text for easy reading;
For example, Latitude = 22 32 36.63N Longitude = 114 04 57.37E, Speed = 2.6854Km/h, 2008-12-24,01:50
B=1, location data complies with NMEA 0183 GPRMC protocol.
For example, $GPRMC,161509.000,A,2232.5485,N,11404.6887,E,0.3,153.7,290709,,*03
C=0, turn off the function to automatically hang up an incoming call;
C=1, turn on the function to automatically hang up an incoming call after 4 - 5 rings.
D=0, turn off the function of sending an SMS when the tracker is turned on;
D=1, turn on the function of sending an SMS to the authorized phone number for SOS when the tracker is turned on.
E,defaulted as 1 (the tracker shuts down automatically when the power voltage is lower than 3V).
F=0, turn off the SMS alarm when the tracker enters GPS blind area;
F=1, turn on the SMS alarm when the tracker enters GPS blind area. SMS is to be sent to the authorized phone number for
SOS.

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G=0, all LEDs work normally;
G=1, all LEDs stop flashing when the tracker is working.
H, reserved and defaulted as „0‟.
I=0, turn off the function of sending SMS alarm when the extra power of the vehicle tracker is cut;
I=1, turn on the function of sending an SMS alarm to the authorized phone number for SOS when the extra power of the
vehicle tracker is cut.
J,defaulted as 1.
### is the ending character.
(ABCDEFGHIJ defaulted as 1000100001)
Presetting by SMS for GPRS tracking (Ensure that your SIM card supports GPRS connection prior to setting)
Set Tracker’s GPRS ID
W******,010,ID
W000000,010,00001
Remarks: to set a digital GPRS ID for the tracker.
GPRS ID must not be over 14 digits.
Set APN
W******,011,APN,Username,
Password
W000000,011,CMNET,Meiligao,6688
W000000,011,CMNET
Remarks: If no APN username and password are required, just input APN only.
APN defaulted as „CMNET‟.
APN + username + password should not over 39 characters.
Set IP and Port
W******,012,IP,Port
W000000,012, 220.121.7.89,8500
W000000,012,www.meiligao.net,8500
Remarks: IP is your server‟s IP or the domain name. Port: [1,65534]
Set DNS Server IP
W******,009,DNS Server IP
W000000,009,220.23.4.90
Remarks: If the domain name you set by the last command (W******,012,IP, Port) doesn‟t work, your server IP is not properly
set. You can first use this command to set DNS Server IP (please check with your DNS server provider for the DNS Server IP)
and then redo the command W******,012,IP,Port.
Enable GPRS Tracking
W******,013,X
W000000,013,1
Remarks:
X=0, to turn off GPRS tracking (default);
X=1, to enable GPRS tracking via TCP;
X=2, to enable GPRS tracking via UDP.
Set GPRS Interval
W******,014,XXXXX
W000000,014,00060
Remarks: to set time interval for sending GPRS packets.
XXXXX should be in five digits and in unit of 10 seconds.
XXXXX=00000, to turn off this function;
XXXXX=00001~65535, time interval for sending GPRS packet and in unit of 10 seconds.
In this example, the tracker will send every 600 seconds (10 minutes).
Set Heartbeat Interval
W******,015,data
W000000,015,10