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Review title: 3a.m. Fire Drills -- not fun!
Product review: Have these units on their own circuit breaker. When a storm went through the breaker was tripped and soon found out these units cannot live off a 9V battery for more than a day. They are also good for waking us up at 3 am with false fire alarms. Good way to find yourself in a "boy who cried wolf" situation.
