Kidde KN-COSM-BA Smoke/Carbon Monoxide Alarm
Best dual protection solution for safety conscious homeowners on a budget.
This dual-purpose safety device simplifies home protection by combining smoke and carbon monoxide detection into one unit. It eliminates the need for complex wiring, relying on battery power for straightforward installation and reliable, voice-guided alerts during emergencies.
$24.00
at
21USDeal (online retailer)
More Nighthawk options
Who it's for
- Homeowners seeking streamlined safety coverage with fewer ceiling-mounted devices
- Families with children who respond better to verbal instructions
- Renters or DIYers wanting reliable protection without professional electrical work
Who should skip it
- Safety-conscious buyers looking for the fastest response to smoldering fires
- Busy individuals who prefer low-maintenance, set-it-and-forget-it safety devices
- Residents in small apartments with alarms located near the kitchen
Performance breakdown
Dual-hazard protection
Combines fire and carbon monoxide sensing into one reliable, space-saving unit.
Alert clarity
Voice warnings eliminate guesswork by clearly announcing the specific emergency type.
Maintenance accessibility
Front-loading battery door makes routine replacements quick and frustration-free.
Nuisance control
Smart hush button effectively silences false alarms without compromising safety.
Reliability
Battery-operated design ensures consistent monitoring even during total power failures.
Longevity
Ten-year lifespan provides a full decade of protection before replacement.
Key Specs
Power Source
2 AA batteries
Detection Technology
Ionization
Weight
227 grams
Dimensions
5.5 x 5.5 x 2 inches
Warranty
5 years
Product Lifespan
10 years
Compliance
UL2034 and UL217
Color
White
Know before you buy
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Ask Metto anything about the Kidde KN-COSM-BA Smoke/Carbon Monoxide Alarm before you decide.
