Our Sonic Alert system flashes with out the phone ringing since we have switched to DSL. All of the telephones filters on them. We have the SA-1 and SA-2 units + the 77 Telephone ringer.

Asked by Bob on 08/30/2014 1  Answer

ManualsOnline posted an answer 10 years, 4 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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