I have a battery powered alarm system that uses very little power. It has an internal, and external horns that sound at 165 decibels. Probably can be heard a mile away. Anybody inside would get out quick.
But what happens when the alarm goes off and I'm 60 miles away?
How are you notified the alarm is going off?
Who and how is the alarm shut-off and re-armed?
Does an alarm company or Sheriff's office monitor the alarm?