Local problem solved!

Difficult to navigate in all wireless doorbells choice.
Happy choice than mine because it works very well and in some special conditions that made me doubt to installation !!!
It was necessary that the transmitter comes in two different places at a distance of over 60 meters which is crossed by a path of trees and bushes.
Mission accomplished. I highly recommend this product to those who live "off the road" and who are scolded by the factors !!!
For details, there is a papardelle multiple and varied tones that we did not busy!
Very good product for the moment, has withstood the rain and mountain snow.