Have this doorbell now for a few months in use and am so far very pleased with the product. + Very loud ringer (with me on Stuffe 2, since the 3 mine is too loud). Since it is right on the socket, I (always had the problem with another bell) spare me the monthly battery change. The transmitter uses cheap 3v battery (most one has a small 12v battery approx 5 euros cost). Price / performance ratio. - only one that I could use of the 32 tunes (but is a matter of taste)
Conclusion: Maybe not the most beautiful bell but served its purpose.