FIRST ALERT BRK SC9120FF Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 1 pack , White

The BRK SC9120B hardwire combination smoke and carbon monoxide alarm detects two hazards with one simple unit. Carbon monoxide (CO) is a colorless, odorless, deadly gas. It can be emitted by sources including gas or oil furnaces, gas clothes dryers, water heaters, fireplaces, wood stoves, charcoal grills, gas ranges, and space heaters. A clogged chimney, improper venting, and attached garages can also cause carbon monoxide accumulation. The BRK SC9120 hardwire combination smoke and CO alarm with battery backup includes these features: Quick plug in power connector for easy installation, 120 volt AC inter connectable (with maximum 18 compatible devices 12 other compatible smoke alarms + 6 compatible devices like bells, horns, repeaters and door closers. If one unit triggers an alarm, all smoke alarms in the series will sound. Single test/silence button which both silences a non-threatening alarm or low battery warning and allows you to test the unit’s functionality. Automatically performs internal test of functionality. Latching alarm indicator which automatically identifies which unit initiated the alarm. Battery drawer lock and mounting bracket lock for tamper resistance. AC power indicator and alarm indicator light. Low battery warning “chirp” and missing battery tab. 9 volt battery backup for peace of mind during power outages. All BRK Electronics carbon monoxide alarms are listed to UL Safety Standard 2034 for residential carbon monoxide alarms. Includes 9 volt backup battery. 7 year limited warranty. Includes: One combination smoke and CO alarm, one 9 volt battery, and user’s manual.Hardwired combination CO smoke alarm features battery backup for constant monitoring

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Keep your family safe with this hardwired smoke and carbon monoxide alarm; The battery backup means constant monitoring, even if there’s a power failure
Features an electrochemical carbon monoxide sensing technology as well as an ionization sensor for smoke detection.
Indicator lights on the face of the unit display the presence of smoke or carbon monoxide, while an 85 decibel siren provides a clear, loud warning upon detection
Can connect to other compatible BRK or First Alert detectors, to ensure all alarms will sound when threat is detected
Simple to use, with a single test/silence button, and side load battery compartment; Tamper resistant locking brackets and universal mounting brackets make installation easy
Rigorously tested to meet UL standards
Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety
First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)