After two appearances so far, I can say the 2 buttons on the 5 appeal with the Canon 600D, triggering and 2 Sec. Delay.
These two are the most important at the end that you need.
Small drawback by infared .... you have to keep the Fernbedinung front of the camera, but this does not mean a huge limitation ;-)
For use where it is thought it is good and therefore recommended.