Remote control EOS 550D

The top 3 keys are for Compaktkameras. Unfortunately, it is not apparent from the description.
Unfortunately, manual only in English, but is actually not notwending if one knows that one
a) must set the camera to "Fernaauslöser" and
b) only the lower two buttons are for the function.
The specified in the product information Zoom buttons are, as already mentioned, only for Compaktkameras.
This should perhaps be mentioned in the description.
Furthermore, this part is working properly.