I have a 105db siren installed in my garage. I heard it one day alarming albeit rather faintly. Why I do not know why it was sounding as I had not had an alarm incident in quite some time. I removed it from its mounting and changed out the batteries. When the last battery is inserted, the siren begins to sound. I have tried holding the program button and entering my pass code, but no luck. Also tried holding the program button with and without batteries installed but no success. What does one have to do to reset the siren? Many thanks for any help, Clive
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