First Alert Standard Battery-Operated Smoke Alarm and CO Alarm Value 2 Pack with Models SMI100 and CO400, 1046718PT

Install reliable fire and carbon monoxide (CO) protection with this First Alert Value Safety 2 Pack. It includes the SMI100 battery-operated smoke alarm and the CO400 battery-operated carbon monoxide alarm. The SMI100 Smoke Alarm features the First Alert Precision Detection advanced-sensing technology that meets the latest industry standards to reduce cooking nuisance alarms, detect smoke from synthetic materials, and provide early warning in the event of a home fire emergency. The CO400 carbon monoxide alarm utilizes an electrochemical carbon monoxide sensor - the most accurate sensor available - to detect carbon monoxide. Both are battery operated, easy to install, have convenient test/silence buttons, front-access battery doors for easy battery replacement, and will work in the event of a power outage. Provides early warning to help you and your loved ones safely escape Alarm sound levels: 85 dB at 10 ft. Both are battery operated, easy to install, have convenient test/silence buttons, front-access battery doors for easy battery replacement, and will work in the event of a power outage Smoke alarm features Precision Detection advanced-sensing technology; reduces nuisance alarms and detects smoke from synthetic materials which burn hotter and faster for less time to safely escape. CO alarm also has end-of-life unit warning so you know when to replace the alarm all together.