Best Smoke Detectors
Find the best smoke detectors for home safety.
First Alert CO400 Carbon Monoxide Detector
- ✓Detects carbon monoxide in homes and vehicles
- ✓Battery-powered with low battery indicator alert
- ✓Test button verifies alarm function monthly
First Alert CO400 Carbon Monoxide Detector
- ✓Detects carbon monoxide in homes and vehicles
- ✓Battery-powered with low battery indicator alert
- ✓Test button verifies alarm function monthly
First Alert SMI100-AC Hardwire Smoke Detector
- ✓Precision Detection reduces cooking false alarms
- ✓Meets latest industry safety standards
- ✓Early warning for home fire emergencies
First Alert SMI100-AC Hardwire Smoke Detector
- ✓Precision Detection reduces cooking false alarms
- ✓Meets latest industry safety standards
- ✓Early warning for home fire emergencies
First Alert Smoke Alarm Battery-Operated
- ✓Precision Detection reduces cooking false alarms
- ✓Complies with new industry safety standards
- ✓Early warning detection for home fire emergencies
First Alert Smoke Alarm Battery-Operated
- ✓Precision Detection reduces cooking false alarms
- ✓Complies with new industry safety standards
- ✓Early warning detection for home fire emergencies
First Alert Smoke & CO Detector
- ✓Advanced sensing reduces cooking false alarms
- ✓Detects smoke and carbon monoxide threats
- ✓Meets latest industry safety standards
First Alert Smoke & CO Detector
- ✓Advanced sensing reduces cooking false alarms
- ✓Detects smoke and carbon monoxide threats
- ✓Meets latest industry safety standards
Kidde 20SD10 Smoke Detector 10-Year Battery
- ✓Detects smoke 25% faster than standard models
- ✓85-decibel alarm with red LED visual warning
- ✓10-year sealed battery requires no replacement
Kidde 20SD10 Smoke Detector 10-Year Battery
- ✓Detects smoke 25% faster than standard models
- ✓85-decibel alarm with red LED visual warning
- ✓10-year sealed battery requires no replacement
Kidde CO Detector AA Battery Powered
- ✓Electrochemical sensor detects CO gas reliably
- ✓Battery-powered operation works during power outages
- ✓No wiring required for easy wall installation
Kidde CO Detector AA Battery Powered
- ✓Electrochemical sensor detects CO gas reliably
- ✓Battery-powered operation works during power outages
- ✓No wiring required for easy wall installation
Kidde CO+Gas Detector 120V Plug-In
- ✓Plug-in 120V installation to standard outlets
- ✓9-volt battery backup during power outages
- ✓Digital LED display shows CO levels
Kidde CO+Gas Detector 120V Plug-In
- ✓Plug-in 120V installation to standard outlets
- ✓9-volt battery backup during power outages
- ✓Digital LED display shows CO levels
Kidde Plug-In Carbon Monoxide Detector
- ✓120V outlet power with 2-AA battery backup
- ✓85-decibel alarm alerts to CO detection
- ✓Protects during power outages with battery
Kidde Plug-In Carbon Monoxide Detector
- ✓120V outlet power with 2-AA battery backup
- ✓85-decibel alarm alerts to CO detection
- ✓Protects during power outages with battery
Kidde Plug-In CO Detector with AA Backup
- ✓85 dB alarm alerts when CO detected
- ✓Backlit display shows real-time CO levels
- ✓AA battery backup for continuous protection
Kidde Plug-In CO Detector with AA Backup
- ✓85 dB alarm alerts when CO detected
- ✓Backlit display shows real-time CO levels
- ✓AA battery backup for continuous protection
X-Sense SD01 Smoke Detector 10-Year Battery
- ✓10-year sealed lithium battery
- ✓Test/silence button included
- ✓UL 217 certified for safety
X-Sense SD01 Smoke Detector 10-Year Battery
- ✓10-year sealed lithium battery
- ✓Test/silence button included
- ✓UL 217 certified for safety
Buyer's Guide
Sensor Type: Ionization vs. Photoelectric
Ionization detectors respond faster to flaming fires (15-30 seconds quicker), while photoelectric excel at detecting smoldering fires that produce heavy smoke. Dual-sensor models cost $30-60 but provide comprehensive protection. For bedrooms and living areas where smoldering fires from furniture are common, prioritize photoelectric or dual-sensor units.
Power Source: Hardwired vs. Battery
Hardwired detectors with battery backup ($25-45) never need battery replacements for primary power and meet building codes for new construction. Battery-operated models ($15-30) install anywhere in minutes but require annual battery changes. Sealed 10-year lithium battery units ($20-40) eliminate battery maintenance but must be fully replaced after a decade.
Carbon Monoxide Detection
Combination smoke/CO detectors ($40-70) reduce device clutter and ensure CO protection in sleeping areas where it's most critical. Standalone CO detectors ($25-45) work for furnace rooms or garages. CO sensors have 5-7 year lifespans versus 10 years for smoke-only units, so combination models require more frequent replacement.
Smart Features and Interconnectivity
Interconnected detectors (wired or wireless at $45-80 each) trigger all alarms when one detects danger, crucial for multi-story homes where a basement fire might not wake upper-floor occupants. Smart detectors ($100-120) send phone alerts and silence false alarms remotely but require Wi-Fi and app maintenance.