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3 Options
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Pros
Pro Use of backup battery in case of power outage
The unit switches to backup battery power in the event of a power outage in your home and resumes normal electrical operation when power is restored. As a result, battery use is greatly diminished, and you may not have to replace batteries as frequently – still, it is strongly recommended that you replace your smoke detector batteries at a minimum of once every 12 months. This smoke detector requires a single 9-volt battery for backup purposes.
Pro Adjustable alarm system
Loud alarm of up to 85 dB.
It comes with the ‘hush’ control that the user can activate in order to silence nuisance alarms. There is also a LED indicator that confirms whether the alarm is working or not. This red LED light flashes every 30-40 seconds to indicate that the alarm is operating correctly.
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Cons
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