+ Easy installation; Insert battery and attach bell and finished
+ The door chime is very noisy at the highest level, so that it can be heard inside a house over several floors; Alternatively it can be taken
+ Between 8 melodies / sounds can be selected; the melodies are euphonious in my view
+ Very good range; the radio signal also goes through thicker walls
+ Bell lights up at night
- Negative points I could not find
Conclusion:
I can very happy to recommend to buy the door chime. 5 Stars