I would not indeed have thought that I would write a review once a door chime. But I also had no idea that it is no longer so easy nowadays to find a reasonably well-sounding gong simply gongt - and also needs no batteries! So if you can not stand the beeping, screeching and whining trendy digital gongs, which is well served with this mechanical Gong. In addition, this Dafa is good tolerable even from a visual standpoint. On the manufacturer's website (friedland.eu) you can set the tone by the way also listen! Oh yes, it is also good to hear (about 80 dB).