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What is wrong with my uni-com wireless door chime?

Recently my doorbell has been chiming without anybody pressing the outer door bell. It is occurring regularly, even throughout the night.

Please could you inform me as to what steps to take to prevent this from occurring. My information booklet has been misplaced.

The model No is:52593/SC310
Mr Sarwan Singh Sandhu, March 2009
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