First Alert SMI100 Smoke Alarm
Best essential safety for straightforward home protection.
This battery-powered smoke alarm uses a photoelectric sensor for reliable detection and fewer false alarms. It's easy to install without wiring and provides a loud 85 dB alert. A test/silence button and low battery warning add to its user-friendly design, ensuring continuous protection.
$16.95
More SMI100 Series options
First Alert Smoke Alarm SMI100
$24.95
First Alert SMI100-AC
$129.95
First Alert SMI100-AC Smoke Alarm
$19.95
First Alert SMI100-AC Smoke Alarm
$93.59
First Alert SMI100 Smoke Alarm
$16.99
First Alert SMI100-AC Hardwire Smoke Alarm
$19.47
First Alert SMI100-AC Smoke Detector
$19.99
First Alert Precision Detection Interconnect Hardwired Smoke Alarm
$31.00
First Alert SMI100-AC Hardwire Interconnect Smoke Alarm
$183.99
First Alert Smoke Alarm
$79.99
First Alert SMI100-AC Smoke Alarm
$117.00
First Alert SMI105-AC Interconnect Hardwire Smoke Alarm
$30.99
First Alert Precision Detection Interconnect Hardwired Smoke Alarm
$34.95
First Alert SMI100-AC Smoke Alarm
$117.00
First Alert SMI105-AC Smoke Alarm
$84.56
First Alert 9120BFF/ SMI100-AC Smoke Detector
$20.36
Who it's for
- Homeowners and renters seeking hassle-free safety device installation.
- Consumers prioritizing established brands for critical home safety devices.
- Budget-conscious individuals needing reliable smoke detection without premium features.
Who should skip it
- Occupants who prefer maintenance-free or long-life sealed battery alarms.
- Homeowners desiring a synchronized alert system throughout their entire property.
- Tech-savvy users expecting modern features and connectivity from safety devices.
Performance breakdown
Detection Accuracy
Photoelectric sensor excels at identifying smoldering fires while reducing nuisance alarms.
Installation Simplicity
Battery-powered design eliminates complex wiring for quick, straightforward ceiling mounting.
Alert Reliability
Standard 85 dB siren ensures occupants are effectively notified during emergencies.
Maintenance Convenience
Integrated test and silence buttons make routine safety checks effortless.
Power Resilience
Independent battery operation guarantees protection even when the power grid fails.
Long-term Durability
Ten-year limited warranty provides significant peace of mind for homeowners.
Detection accuracy
Photoelectric sensors excel at identifying slow-burning, smoldering fires quickly.
Installation simplicity
Battery-powered design eliminates complex wiring for a straightforward ceiling mount.
False alarm mitigation
Advanced sensing technology effectively filters out common kitchen steam and smoke.
Maintenance ease
Clear low-battery chirps and accessible test buttons simplify routine upkeep.
Reliability
Independent power source ensures consistent protection even during total electrical failure.
Alert volume
Standard 85-decibel siren provides sufficient intensity to wake sleeping occupants.
Key Specs
Power Source
9V Battery
Sensor Type
Ionization
Alarm Sound Level
85 dB
Dimensions
48.26mm (H) x 137.16mm (Diameter)
Weight
317.51 grams
Certification
UL 217 8th Edition
Warranty
10 Years Limited
Interconnectivity Type
Standalone
Pack Quantity
3
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