Anonymous4 years ago000Does the Caru also give an acoustic warning signal when it detects e.g. smoke (fire)?Show in original language (German)MarianneStuber4 years ago • purchased this product000purchased this productno, no acoustic signals - the air quality is indicated by means of "traffic lights".Show in original language (German)CommentAnonymous4 years ago • purchased this product000purchased this productno, neither. But it works perfectly to indicate when to ventilate. I have a practice and my clients find it reassuring that the device 'monitors' air qualityShow in original language (German)CommentAnonymous4 years ago • purchased this product000purchased this productno, the device does not emit any sounds. And it is not a smoke detector either.Show in original language (German)Comment