The Update Frequency of your Trax controls how often your Trax will send its location to the app.
You can change these settings in the Trax app under the Tracker Settings using the slider:
As Trax devices run on battery power, the more frequent the update, the more power it will consume, the less frequent, the less battery will be used.
Please note: If you have your device set to update once every hour, this means that the Trax will only send and receive communication from the servers when it has been one hour since the previous communication, this means that any changes you want to make to the settings or update frequency will only take place on the next update scheduled.