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I bought this unit to replace one that I had in place for 7 years. They apparently are only good for that period of time and then must be replaced. Fortunately, I have never had one go off but it's a good protection to have in case you need it (like a smoke alarm or a fire extinguisher). The test feature tells you that it is functioning properly.I like that it stays pluged into a wall outlet for its primary power supply and also has a backup battery in case of power outage.
Verified purchase: Yes | Condition: New
Does not have voice warning. It is unbranded, MECO is not a brand. Very low alarm sound. Highly doubt it will detect carbon monoxide.
Verified purchase: Yes | Condition: New
Product easy to setup Functioning as expected
Verified purchase: Yes | Condition: New
Bought two new First Alert Carbon Monoxide Alerts for my Home in Texas. They look great and are a Good Value and came in sealed containers. Ron in Texas on 02-18-2016
Verified purchase: Yes | Condition: New
Great carbon monoxide detector for the price. Has battery backup. Hope I never have to use it!
Verified purchase: Yes | Condition: New
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