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BRK Brands 120-Volt Hardwire, Ionization Sensor Smoke Alarm Detector Perfect Mount with Battery Backup 9120B - The Home Depot
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Smoke Alarm 120V #9120B, Brk Ac/Dc W/Bat | Smoke and CO Alarms | Fire Safety | Safety and Security | Maintenance and Engineering | Open Catalog | American Hotel Site
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First Alert BRK SC-9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup - Combination Smoke Carbon Monoxide Detectors - Amazon.com
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