Unfortunately, the device was able to turn only to a distance of 3-4 meters without the obstacles were.
The connection to a ELRO AB440S radio outlet worked without problems as though already written the distance could be no more than 3-4 meters. The control and set up the app worked at this distance properly.
The built-in garage InterTechno radio switch ITL-1000 I could not add, however. Although both devices in the same room (garage) were. But I had the ITGW-433 actually bought.
By InterTechno remote controls, however I was able to operate the ITL-1000 without any issues at the same distance and even a lot.
To the ITGW-433 easily use it in any room should be installed the radio Schlater or outlets has.
Therefore, unfortunately, only 2 stars