First Alert SC9120B Hardwire Combination Smoke/Carbon Monoxide Alarm with

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Item Description

Amazon.com Item Description
The BRK hardwire mixture smoke and carbon monoxide alarm detects two hazards with one particular effortless 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 trigger carbon monoxide accumulation. According to the Consumer Product Security Commission (CPSC), at least one particular CO alarm should really be installed close to a home's sleeping region.
The BRK SC9120 hardwire mixture smoke and CO alarm with battery backup contains these functions:

• Rapid plug-in power connector for simple and easy installation.
• 120-volt AC inter-connectable (with maximum 18 compatible devices). The alarm can be interconnected with up to 12 other compatible smoke alarms and six compatible devices like bells, horns, repeaters and door closers. If one unit triggers an alarm, all smoke alarms in the series will sound. Power indicators show which unit in the series initiated the alarm.
• Ionization sensor which is extra powerful at detecting flaming fires which consume combustible supplies quickly and spread swiftly.
• Microprocessor controlled for fewer nuisance alarms.
• Single test/silence button which each silences a non-threatening alarm or low battery warning and makes it possible for you to test the unit's functionality.
• Automatically performs internal test of functionality.
• Latching alarm indicator which automatically identifies which unit initiated the alarm.
• Separate smoke and carbon monoxide visual and audible warnings.
• 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 Common 2034 for residential carbon monoxide alarms. Consists of 9-volt backup battery. 5-year restricted warranty.--Bree Norlander
What's in the Box One particular combination smoke and CO alarm, one 9-volt battery, and user's manual