First Alert BRK Hardwired Smoke and Carbon Monoxide Alarm - SC9120LBL

Capable of sensing both smoke and carbon monoxide, the First Alert BRK Brands Hardwired Combo Smoke & Carbon Monoxide Alarm with 10-Year Battery features an Electrochemical Carbon Monoxide Sensor that allows for the most accurate detection of carbon monoxide when compared to other sensing technologies.

Note: A loose neutral (white wire) connection within the home junction box could prompt a device malfunction Equipped with an ionization sensor, this

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First Alert BRK Hardwired Smoke and Carbon Monoxide Alarm - SC9120LBL

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