First Alert BRK 10-Year Battery, Battery-operated Smart Photoelectric Combination Smoke and Carbon Monoxide Detector 6 -Pack

BRK 10-Year Battery, Battery-operated Smart Photoelectric Combination Smoke and Carbon Monoxide Detector 6 -Pack. Precision Detection technology helps reduce cooking nuisance alarms and provides early warning.. 10-Year sealed battery provides continuous protection. No battery replacements and low battery chirps for the life of the alarm. End-of-life warning lets you know when it’s time to replace the alarm. Test/Silence button allows for efficient testing and temporarily silences alarm for up to 8 hours. Slim profile design is half the depth of a standard alarm