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If your CO alarm chirps every 30 seconds, it's not an emergency but you should replace the CO alarm a.s.a.p. - Fire Line
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Kidde - 6.1 Inch Long x 3.8 Inch Wide, AC Plug In 120 Volt Carbon Monoxide and Explosive Gas Alarm - 79214987 - MSC Industrial Supply
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Have a question about Kidde Firex Plug-in Carbon Monoxide Detector, 9-Volt Battery Backup and Digital Display, CO Detector? - Pg 1 - The Home Depot
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Carbon Monoxide Detector Alarm CO Detector Alarm Sensor with LCD Display Memory Function Battery Operated for House Bedroom Living Room Factory Hotel
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Kidde Firex Plug-in Carbon Monoxide, Propane, Natural and Explosive Gas Detector, 9-Volt Battery Backup & Digital Display 21029623 - The Home Depot
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