First Alert Combination Explosive Gas and Carbon Monoxide Alarm with Backlit Digital Display, GCO1CN 5000 Smart Power fashion icon

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First Alert Combination Explosive Gas and Carbon Monoxide Alarm with Backlit Digital Display, GCO1CN 5000 Smart Power fashion iconMonitor your house for dangerous levels of methane, propane, and carbon monoxide with the First Alert GCO1CN Combination Explosive Gas and Carbon Monoxide Alarm with Backlit Digital Display. This explosive gas and CO alarm detects the presence of combustible gases propane and methane and alerts you with a loud 85 decibel alarm. It also comes equipped with an electrochemical CO sensor that accurately detects carbon monoxide leaks from faulty fuel