Timer events are useful to launch tasks periodically. This makes it possible to request e.g. the temperature from a temperature sensor e.g. every 100 seconds and check the returned value. If necessary, the task can take countermeasures. So, timer events can be used to check threshold values from sensors that are not capable to fire an event if the threshold is exceeded or to request status parameters periodically.
To create a timer event select Events → Timer from main menu or use the context menu of the event list.
After the event is created (see picture above), it is necessary to assign a task to that event (same procedure as in Calendar or Device Events). To change a Timer Event, double click in the list. The caption of the Add button changes to Update. Change Interval and / or Event Name and click Update.