There is no dissatisfaction about the specification, but it is dissatisfied with the chime sound. Volume adjustment is too small, I can not catch it if I am not careful, or the visitor is surprised because it is too big. Moreover, the sound is broken when the volume is high. defect? Is it a defective item? Also, the type of the chime was better for the old type.
The chime's sound is not great even if it is maximum. I do not know if the sound is big because the chime sound is 2 times at the maximum and the ringing time is small. The old type had various melodies and the volume was good, but the new type got worse. In addition to the chime, in the case of a melody sound, the sound is too small and it is difficult to distinguish it because it is a treble.