birgit.epplen7 years ago000Does the robot vacuum cleaner have a valid CE seal? How often does the filter need to be changed? Thank you for your answers :-)Show in original language (German)joe.donkor7 years ago • purchased this product000purchased this product Helpful answerAn app informs you when the filters are to be changed. The robot has CE conformity.Show in original language (German)Commentamirs.tafreshi7 years ago • purchased this product000purchased this productYou can frequently change the filter. They also have a backup filter! You can also clean the filters manually. You should change the filters only if they are broken (from my point of view).Comment