User Tools

Site Tools


User's guide

Transport and storage

The packaging is designed to protect the product from the usual physical effects during transport. Be careful to avoid effects other than these.

The packaging of the product is not water, flame and heat resistant and only moderately pressure resistant. Therefore, do not keep the box in a humid environment, within the range of heat emitting equipment, or place heavy objects on it.



The package consists of a box containing the device and its accessories.



  1. Open the box.
  2. Remove the product and accessories.

Contents of the package
TK905-4G-LTE tracking device 1 tracking device
Carrying case and SIM devices Carrying case and SIM devices
USB cable 1 USB cable
Installation instructions 1 Installation instructions

Preparing the SIM card

As with mobile phones, a SIM card is required to operate the device. The device communicates with the mobile service provider's network via SIM card, SMS or mobile phone or PC applications.

You can purchase the card independently from your mobile service provider or, in the case of a software subscription, from your product distributor. If you received the SIM card from your dealer, you do not need to make any settings: the card is already set up, inserted in the device, switched on and ready for use.

If you have received the SIM card from your dealer, do not try to transfer it to another device (eg phone) and use it! The distributor (service provider) will reimburse the resulting costs or the correction of the resulting errors.

Settings for your SIM card

If you did not obtain the SIM card from your tracking device vendor, you must set it up before inserting and using it in the device, which you can do as follows.

Disable SIM card PIN and other functions

  1. Insert the SIM card in your phone.
  2. Among the setting functions of the phone
  3. turn off the PIN code request, auto-reply and call forwarding options.

After turning off the above, insert the card into the tracking device. See the next section for instructions on how to insert the SIM card.


Setting up data traffic

If you want to operate the device not only via SMS, but also e.g. If you use the software tracking service provided by your dealer, you must activate GPRS (Internet) data traffic and enter the appropriate network settings. To do this, you need to send SMS messages from your phone to the phone number of the SIM card inserted in the tracking device, as shown in the table below.

The factory-set access password for the tracking device in the commands: 123456

Setting SMS message Device response
Turn on GPRS data traffic gprs123456 GPRS ok
Enter the APN name apn123456(space)APN-name apn ok
APN names for domestic service providers in Hungary: Telenor: online vagy net
Telekom: internet
- in case of subscription:
- in the case of a top-up card:
Digi: internet
If your mobile network provider has not provided you with an APN username and password, you do not need to send the following SMS messages to the tracking device!
APN username apnuser123456 APN-username apnuser ok
APN password apnpasswd123456 APN-password apnpassword ok


Inserting the SIM card

Only standard size SIM cards can be used with this product. If you have a nano or micro SIM, use a card adapter.

Insert the SIM card into the device as follows:

Inserting the SIM card


  1. Open the cover of the SIM card slot.
  2. Insert the card into the slot. The device turns on and the LED lights up when the card is inserted. Be sure to insert the card in the correct position.
  3. Close the protective cover.

Installing the device

You can place the device on any magnetizable metallic surface, either inside or outside the passenger compartment (eg. chassis).

Application installation, access

In order to operate the device and other services based on it, the distributor provides mobile and computer applications in the subscription system. The PC program is accessible via a browser at, and you can install the phone application on your phone in one of the following ways:

For Android phones

  1. Open the Google Play app on your phone.
  2. Search for “Flexcom” or “Flexcom tracking” on Google Play.
  3. Install the tracking application.


  1. Scan the QR code shown here with your phone.
  2. Open the web address decoded from this.
  3. Install the Flexcom tracking application.

For iPhones

Use the browser on your phone to access the service (


Using the product

User Interface

The device does not have a traditional user interface (eg on / off button). An LED indicator informs the user about its operation and status. In addition, only the charger connector, the SIM card slot and a carrying strap can be connected on its surface.

User Interface

LED display statuses

Display Status
Solid yellow No mobile network connection
Flashing yellow Connected to a mobile network
Solid blue No satellite connection
Flashing blue Connected to a satellite network
Solid red Charging

Internal battery

The device is powered by a built-in battery, which needs to be charged at different intervals depending on the intensity of use. Your phone's charger is suitable for charging, but you can also use the USB connection of a computer or energy bank.

The appropriate USB charging cable is included with the device. It is connected to the tracking device via a MICRO USB connector - if you do not use the factory cable, make sure that it is type-compliant!

Charging via USB

Charging takes 6-8 hours, during which the LED indicator lights up red. When the device is fully charged, the light turns off.

When the battery is fully charged, disconnect the charging cable. The device does NOT have overcharge protection, so keeping it on a long-term or continuous charger (eg connecting to a vehicle battery) will shorten the life of the device or, in worse cases, damage it. For the device with a voltage of 5V 1 Use a charger that provides current. Chargers with a higher capacity can damage the battery.

Switching on and off

The device switches on automatically when you insert the SIM card, and switches it off when you remove it. It does not have a separate on / off button.

Operating time

The device is set at the factory to be so-called at rest. Switches to “sleep” mode. In this state, its operating time is about 45 days. It switches from sleep mode to operating mode (“wake”) in the event of external influences (eg movement, vibration).

For use via software, the operating time also depends on how the data transmission frequency of the device has been determined (eg 10 seconds, 1 minute, 5 minutes, 1 hour, etc.). For example:

  • With 1 hour of wakefulness per day, approx. 2 weeks.
  • With a wakefulness of 8-10 hours a day, approx. 1 week.

If the device is operated with SMS commands, the operating time is affected by the frequency of issuing the commands (ie forcing the device to respond).

Normal operation of the device

The device can be operated in the following ways:

  1. using the software service provided by the distributor and the SIM card together, in addition to the software service provided by the distributor but using his own SIM card, or
  2. without the service provider's software service, with your own SIM card.

The service provider provides a SIM card for the tracking device only if you subscribe to the software service. In the case of unsolicited use of the software, the user must provide the appropriate card with a data traffic limit (also).

With Distributor Software and SIM Card

In this case, you can receive the device in the ready state, no further settings are required to use it.

Separate software is available for setting or adjusting the operating parameters of the device, for retrieving information or for using more advanced services (eg map route display, waiting and travel points, diagrams, timetable, etc.). This is provided by the distributor in the form of a downloadable application on a desktop and tablet browser on an Android mobile phone as part of a subscription system.

To use the software, an active internet connection is required on your device (mobile phone, computer).

The software stores and processes the data sent by the tracking device to the service provider's center, from which the graphical and textual information is generated. Using the software triggers (sometimes very expensive) SMS and voice call communication with the device and provides tracking and security services that go well beyond the basic functions of the device.

After launching the application in a browser or phone:

  1. In the login window, enter the username and password you received in the email from the distributor or registered on its website.
  2. In the interface that appears, select Help and review the information for using the software.
  3. Software management information is available in its help.

With Distributor software but with own SIM card

After setting up and inserting the SIM card as described in the setup chapter, you must register the card. To do this, contact your software service provider (device vendor). From now on, the operation of the device is the same as described in the previous chapter.

Without software, with own SIM card

If you have subscribed to the reseller's software service, DO NOT use the standalone SMS communication method because

  • redundant (the software has all the functions needed for tracking and settings),
  • the software provider charges a separate fee for the possible elimination of possible operational anomalies caused by SMS commands,
  • if you use your own SIM card in the device, SMS will incur extra costs,
  • if you use your service provider's SIM card, your service provider will reimburse you for the cost of the SMS.

If you do not use (have not subscribed) to the software service provided by the dealer, you can only use the basic functions of the device - by sending SMS messages from your mobile phone to the phone number of the device's SIM card.


Setting options via the software

When using the desktop or mobile application of Flexcom Kft, the setup operations related to tracing can be accessed in the following ways.

The settings and commands that can be issued depend on the type of device. See the rest of this guide for information on options for this device.

When using a desktop application:

Select the desired device on the map or in the menu.

Click the Settings or Commands button to select the general setting or behavior you want.
Commands and settings for a desktop application

When using a mobile application:

From the application menu, select Map. Selecting Map option
Switch to the Tools panel. Switching to the Tools panel
Find your device in the list of devices and tap the Setup icon next to the ID. Selecting Setup
Select the desired setting or, when sending a command, select Commands. Select function


Control the device with SMS commands sent from a mobile phone

The factory-set access password for the tracking device in the commands: 123456


General settings

Function Description SMS message Device response
Restart device You can also switch the device on and off from your phone without moving the SIM card.


Begin Ok
Administrator phone number After setting the administrator phone number (s), the device only accepts calls and SMS commands from this number (s) and sends alerts to this phone number (s). Up to 5 such phone numbers can be set on the machine. After setting the first phone number, further ones can only be entered with SMS sent from this number.

admin123456 phone number

Például: admin123456 0036709876543
Use to enter the phone number
country code prefix (eg 0036, Hungary).

Admin Ok
Delete administrator phone number Delete a previously set administrator phone number.

noadmin123456 phone number

For example: noadmin123456 003612345678

Admin Ok
Set time zone The device's default time zone is set to GMT + 0. This is changed (eg in the case of Hungary, the time zone is GMT + 1), as follows.

timezone123456 value (where value e.g. +1, -2, 0 etc).

Például: timezone123456 +1 (Hungarian time zone

Time Ok
Turn GPRS mode on and off The GPRS data transfer mode is switched off by default in the device (GSM mode is active). If you use tracking software, the GPRS mode must be turned on.

If you have purchased the device with a software service subscription from the dealer, the GPRS mode is already activated!

Turning on
  SMS: gprs123456

Turning off
  SMS: nogprs123456



Query the position of the device

Description Device response
Call the phone number of the device's SIM card from your phone. After receiving the call, the device interrupts it and then sends the data back in an SMS message: latitude and longitude, current speed, time and link, which, when clicked / tapped, will display the device's indicator on the Google map in our phone's browser.

If the device cannot connect to GPS satellites (eg inside a building or in another shaded area), use the cell information of the GSM transmission towers to determine its position (LBS, Location Based Service). Its accuracy depends largely on the distance from the towers and the mobile network coverage.

or LBS-based positioning


Interception of the environment (sound monitoring)

The device has a built-in microphone and data storage on an SD card. The ambient noise and sounds listened to with the help of the microphone can be recorded on the card in the form of a sound recording. You can listen to the recordings by moving the card to your phone or computer. The device is set to tracking mode at the factory.

Function Description SMS message Device response
Activate eavesdropping mode Turn on recording. The trace is then paused and the device is switched on for approx. It records sounds that can be heard around 5 meters.


Deactivate eavesdropping mode Turn off recording, return to tracking mode.



Sleep mode

Description SMS message Device response
The device - e.g. to save energy, you can switch it to sleep mode. There are two versions of sleep mode:

  • timed mode: wake up to any command or voice call and then return to sleep mode after 5 minutes, or
  • “Shock” mode: waking up to external influences (eg vibration) and then returning to sleep mode after rest.

In sleep mode, the satellite communication is paused, the mobile network connection operates at a basic level.

Activation in timed mode: sleep123456 time

Activation in "shock" mode: sleep123456 shock

Deactivate any sleep mode: sleep123456 off

Sleep time ok, Sleep shock ok or Sleep off ok


Speed alarm

Description SMS message Device response
You can set the device to send an SMS alert if the vehicle speed exceeds the specified limit. The speed limit must be given in the form XXX, if less than 100, the leading zero must also be written out (eg 070).

Turning on: speed123456 sebességhatár

For example: speed123456 070

Content of the alarm message: „Speed alarm!”

Turning off: nospeed123456

Speed Ok or Nospeed Ok


Vibration alarm

Description SMS message Device response
Send an alarm to the phone when the device is moved / shocked / shaken. For this to work, the device must be at rest for at least 5 minutes before exposure.

Turning on: shock123456

Content of the alarm message: „Sensor alarm”

Turning off: noshock123456

Shock OK or Noshock Ok


Battery status indicator

Description SMS message Device response
You can set an alarm in case the battery level drops too low.

Turning on: lowbatsms123456 on
Turning off: lowbatsms123456 off

“lowbat sms on” or “lowbat sms off”

This website uses cookies. By using the website, you agree with storing cookies on your computer. Also you acknowledge that you have read and understand our Privacy Policy. If you do not agree leave the website.