As grandparents take my wife and I frequently our grandchildren in care and custody. The appliance gives us the security that we, when the kids are asleep, and then hear something when we are staying for. Example in the cellar or on the terrace. The sound transmission is excellent. You can hear very well in every corner of our house, and even in a chat on the street with the neighbor (about 50 m distance) is yet to hear anything. The missing manual in German language is to get without problem to the manufacturer's website.
