Someone in your street must have the same doorbell. This happens to me. You have to change the frequency on it. I don't know how you do that though sorry! I'm still trying to resolve this problem for myself!
Christine
June 2009
Contact the maker via the inter net,request or download a new booklet.
Check the bell push for water ingress.(Moisture ) dry out
Check that no one near by has installed one and left it on the SAME install frequency.
Is any one arriving near by in the early hours ARMING a car alarm? radio waves do funny things on there travels.
if possible change the code in the bell push and the receiver you have ten thousand to choose from at least.
wirecutterman
April 2009
I can answer this question...
What is wrong with my uni-com wireless door chime?