The GUI/GUI+/iSGUI*/Control Tower has to be activated before you can use them.
When you buy a GUI/GUI+/iSGUI*/Control Tower license, you will receive a 'license code'. With this license code and the serial number of your Central Unit, you can activate the GUI/GUI+/iSGUI*/Control Tower.

*Remark: as of May 1st 2023 it is not possible to buy an iSGUI license. The subscription (not license) of the successor ATMOS must be purchased via TTecomm platform. For more information about the ATMOS subscription read this article.

How to activate a license:

  • Go to www.teletask.be
  • Choose Professional from the top menu
  • In the License activation section, click on License activation (TELETASK Cloud)
  • Sign in to your TELETASK Cloud account if you have one already. If not, click on Create an account and follow the registration procedure.
  • After logging in, you should be forwarded to the Activate License page. If not, click here
  • Complete the form and click Download activation file
  • Wait a few seconds for your activation file to be downloaded (it will also be emailed to you)
  • Start PROSOFT and open the correct .NBT project file.
  • Import the activation file: choose Extra > Licenses
  • Save the .NBT file and transmit it to the central unit

TELETASK license system


For every simultaneous working GUI/GUI+ you need an activated license. This means that the GUI/GUI+ can be installed on an unlimited number of target systems. However, there can only run as much GUI/GUI+ applications as there are licenses installed.
For example: with 1 license you can activate 1 built-in touchscreen with GUI/GUI+ continuously. At the other hand the license which is used for the GUI/GUI+ on your Desktop PC, can easily be used on your laptop on the road.
This means that when purchasing a new computer/touchscreen PC you don't need a new license!
For testing purposes you can use a GUI/GUI+/iSGUI for three days, without activation.

Control Tower

For every project, only one TDS15110 Master license is needed.
For every Client building (= nbt file) a TDS15111 Client license is needed. Every Client can be real-time connected with up to 3 Master PC’s. If more than 3 real-time Masters are needed, a second Client license is needed in every Client building.


See The ATMOS TSF Subscription page

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