I have this ring tone amplifier for my cousin (> 80J and hard of hearing) purchased and installed. Did he only tried with me and set and then installed in 5 minutes with my cousin in the house -. Now he sees and hears when someone rings at the gate (only in visible areas), both in television (quite loud), on the terrace at nap or drinking coffee and in the garden. The ringtone is not synonymous to the Spirit, because he appeals only once and not 7x (or more often) nachklingelt, as with any other device, when you press only once at the bell. My cousin and his wife are happy.