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Save money over time. Protection for less than 3 cents a day! 100% battery-powered natural gas alarms are the lowest cost to operate over 10 years No hidden electricity costs or annual battery replacements--ever Plug-in alarms cost 5X more to own. DeNova Detect saves about $200 per alarm over 10 years Early Warning Technology proven to alarm up to 11 minutes faster to provide more time to escape safely One alarm is not enough.
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