First Alert - Standard Battery-Operated Smoke and CO Alarm 2 Pack Models SMI100 and CO400 - White
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About this product
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.
Dual Protection
Includes one smoke alarm and one carbon monoxide alarm to help keep your home safe from fire and CO hazards
Advanced Smoke Detection
Features Precision Detection technology that reduces nuisance alarms and detects fast-burning synthetic smoke for early warning
Accurate CO Sensing
Uses an electrochemical sensor for reliable carbon monoxide detection and safety
Battery Operated
Both alarms run on 9-volt batteries, ensuring operation during power outages and easy replacement through front-access doors
Loud Alarm Sound
Alarms emit 85 dB sound at 10 ft to alert you effectively in emergencies
- Detector TypeCarbon monoxide, SmokeSensor TypeElectrochemical, IonizationPower SourceBattery-poweredNumber of Devices Included2
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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.

The First Alert® SM210V 10-Year Sealed Battery Smoke Alarm with Voice and Location Alerts helps guide your escape to safety. It utilizes First Alert's Precision Detection advanced sensing technology that complies with the latest industry standards to reduce nuisance alarms and detect smoke from synthetic materials. Early warning is critical because today’s materials burn hotter and faster and may result in less time for a safe evacuation. It also features a sleek, contemporary design that is half the depth of a standard alarm - helping the device seamlessly blend into the wall or ceiling. The SM210V detector provides reliable and convenient protection with its built-in 10-year sealed battery, eliminating low battery chirps and the cost of battery replacements for a decade. The end-of-life warning will alert you when it is time to replace the detector.

Elevate your home’s safety with the Kidde COPDLQW Smart Carbon Monoxide Detector with Indoor Air Quality Monitoring, engineered with advanced low-level CO sensing to identify even minimal carbon monoxide levels for proactive safety. Low-level CO detection is especially important for children, elderly, pregnant women, and pet owners, so you can act sooner.** This CO detector monitors indoor air quality, measuring temperature levels, relative humidity, and Total Volatile Organic Compounds (TVOCs). It is compatible with Google Home and Amazon Alexa-enabled smart devices, with real-time notifications sent through the Kidde App (no subscription required) and requires a 2.4 GHz Wi-Fi. Get expert advice and extended information on air quality, mold risk, and thermal comfort with the Advanced Home Health subscription. * Perfect for tech-savvy homeowners and renters who value peace of mind while away from home, as well as the convenience of monitoring multiple properties.
| Pros for First Alert - Standard Battery-Operated Smoke and CO Alarm 2 Pack Models SMI100 and CO400 - White | |||
|---|---|---|---|
| There were no pros for this product— | There were no pros for this product— | There were no pros for this product— | Installation Ease, Overall Performance, Connectivity, Compatibility, Design |
| Cons for First Alert - Standard Battery-Operated Smoke and CO Alarm 2 Pack Models SMI100 and CO400 - White | |||
| There were no cons for this product— | There were no cons for this product— | There were no cons for this product— | Features, Alarm Accuracy, Motion Sensor, Night Light, Sensitivity |
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