It is an older model...1839n from the 1990's. it is making a chirping noise about once every hour. Does it need to be replaced? it is wired, there isn't a battery...Is something wrong with the connection?

Asked by sarah on 06/13/2014 0  Answer

ManualsOnline posted an answer 10 years, 5 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

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