In case of fire, every second counts. When a fire started in the basement and sounded the alarm, you can not immediately when you listen to sleep on two floors. In conventional battery-operated alarms, you lose precious time waiting for the smoke to rise another alarm, on another level before the alarm sounds on the floor. But with First Alert alarms OneLink if risk is found, they all sound. This can be noticed, and increases the probability of exit
List Price: $ 65.99
Price: $ 33.99
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