We plugged the doorbell for the first test only 4 meters from the front door. Firstly, the ringtones are very unusual and very long, there were just 1-2 right sounds for us. But that would be ok, but if our front door is closed, the reception is not sufficient. Our door is very old, only made of wood, not even with metal which could worsen the reception. As with the door closed no ringing is possible, I have sent the doorbell back.
