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5m Accuracy GPRS GPS GSM Personal Tracker SMS Monitor Devices with SIRF3 Chip 

Place of Origin: Guangdong, China (Mainland) 
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Product Detail

Model No.: TK201

5m Accuracy GPRS GPS GSM Personal Tracker SMS Monitor Devices with SIRF3 Chip
1 Summary

5m Accuracy GPRS GPS GSM Personal Tracker SMS Monitor Devices with SIRF3 Chip


1 Summary

Working Based on existing GSM/GPRS network and GPS satellites, this product can locate and monitor any remote targets by SMS or GPRS.


2 Applications

l         Vehicle rental / Fleet management etc

l         Protect child / the old / the disabled / pet etc

l         Provide peace-of-mind for businessmen

l         Manage personnel

l         Track criminals secretly


3 Hardware Descriptions


4 Specifications




51(L)x46(W)x17(H) mm






850/1800/1900Mhz or 900/1800/1900Mhz or 850/900/1800/1900

GPS chip

SIRF3 chip

GSM/GPRS module

Siemens MC55 or Siemens MC56 or Simcom300 or Simcom340

GPS sensitivity


GPS accuracy


Time To First Fix

Cold status  45s  Warm status  35s  Hot status  1s

Car charger

12—24V  input     5V   output

Wall charger

110220V  input    5V   output


Chargeable changeable 3.7V 800mAh Li-ion battery



Storage Temp.

-40°Cto +85°C

Operation Temp.

-20°Cto +55°C


5%--95% non-condensing


5 Usages


5.1 SIM card installation

Make sure that there is no call transfer and call display is on, and PIN code off. The SMS message must in Text format, can’t be identified for PDU format.



1 Open the rear cover, and pick out the battery.

2 Push the foil along and turn it left.

5.2 Battery and Charger

Do charge the battery to capacity in 8 -12 hours for first use. Please use the battery and charger provided by the manufacturer. This unit adopts built-in Li-ion battery, and full battery will support around 48 hours use on end. After first use, the battery can be charged fully in 3-5hours.


a: For it’s Li-ion battery, which contains harmful chemicals and may burst, please don’t bump, puncture it violently and keep it off fire.

      b:Please charge the battery in time to keep it working normally.

5.3 Startup

l         Put the SIM card and battery in place.

l         Turn on the unit outdoors by pressing the “on/off” button until the indicator is on.

l         For first use, please initialize the unit and restore it to default setting.( please refer to 5.4 for instruction.)

l         In 10 or 40seconds, the unit will begin to work and acquire the GSM signals as well as the GPS signals. The indicator will keep flashing every 4 seconds when the unit has received the signals, otherwise it will keep on.

l         When this unit receives GPS signals normally, you can use it and do all the following settings.

5.4 Initialization

Send “begin+password” in SMS to the unit, it will reply “begin ok” and initialize all the settings. (default password: 123456)

5.5 Change the password

Send SMS password+old password+space+new password to change the password.


5.5.1Be sure keep the new password in mind, you have to upload the software to restore the original setting in case of losing the new password.

5.5.2Make sure the new password is in 6 digits, or else the tracker can not recognize the password.


5.6 Authorization

There are only 5 numbers able to be authorized.

5.6.1Call the tracker for 10 times, it will make the cell phone number as the authorized number automatically. 

5.6.2Send SMS admin+password+space+cell phone number to set up a authorized number. The other authorized numbers should be set by the first authorized number. If the number is successfully authorized, the unit will reply “admin ok!” in SMS.

5.6.3Send SMS noadmin+password+space+authorized number to delete the authorized number.

5.6.4For roaming purpose, you have to add your country code ahead of the cell phone number, for example, please send admin123456 008613322221111 to tracker to set 13322221111 as an authorized number.

5.7 Real-time polling

5.7.1If there is no authorized number, when any number dials up the unit, it will report a Geo-info; If there is already an authorized number, then it will not respond when an unauthorized number calls it up.

5.7.2When an authorized number dials up the unit, it will hang up and report a real-time Geo-info as below:

Report a Geo-info at 30s intervals to the authorized numbers for 5 times:

5.8.1Set up: Send SMS t030s005n+password to the unit, it will report the Geo-info at 30s intervals for 5 times.(s: second, m: minute, h: hour). The setting must be in 3 digits and at maximum 255 in value.

5.8.2Send SM

 Mr. kaylee

Tel: 86-755-83181674
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Company Info

Shenzhen Dragon Bridge Technology Co., Ltd. [China (Mainland)]

Business Type:Manufacturer
City: Shenzhen
Province/State: Guangdong
Country/Region: China (Mainland)

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