Took away worries. Found an answer to know who was behind the door, who came when i was not there, moreover now can communicate live with the person who presents themselves at my door - best part- the situation is reversed for the person behind the door i am a mystery- if i am present or not. Good solution. Regret buying Ring Doorbell. Ring has monthly charge. Having spent $750 i resent any monthly charges. I should have got ADT would have monthly charges but i don't have to spend for doorbell