Tracking units with firmware versions from 3.54 onwards can be configured online. If you are logged in, the settings page is here
The page shows the latest settings on the tracking unit. Simply fill in the values that you want and click on "Save".
The values you have entered will be uploaded to the tracking unit the next time that it updates its position to the mTrak server.

Note:- Entering values on the setting page has no influence on when the tracking unit conencts to the mTrak server. Sending a text may update the settings sooner.
Note:- Some settings are only available on newer versions of the firmware, so they will only appear on the settings page if the firmware on your tracking unit uses them.