First Alert SMI100-AC Smoke Alarm
Best reliable hardwired protection for budget conscious homeowners.
This hardwired system ensures that when one alarm triggers, the entire house wakes up, eliminating the danger of isolated alerts. It requires professional installation and existing wiring, but the peace of mind provided by a unified, battery-backed safety network is an essential upgrade for any home.
$93.59
at
Amazon
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Who it's for
- Homeowners seeking a permanent and dependable fire safety solution
- Families living in multi-story homes requiring whole-house alerts
- Design-conscious residents wanting safety equipment that complements their interior decor
Who should skip it
- Safety-focused buyers needing comprehensive protection against all fire types
- Home cooks with kitchens located near hallway alarm placements
- Renters or DIY novices looking for a simple tool-free setup
Performance breakdown
Interconnection Reliability
Hardwired linking ensures near-instantaneous alerts across every room simultaneously.
Installation Complexity
Requires existing electrical wiring knowledge, making DIY setup moderately challenging.
Detection Accuracy
Photoelectric sensor excels at identifying slow-burning, smoldering fire threats.
Power Redundancy
Battery backup provides critical peace of mind during grid failures.
Value Density
Six-pack configuration offers a cost-effective solution for whole-home coverage.
Alert Volume
Standard 85-decibel output is loud enough to wake heavy sleepers.
Key Specs
Power Source
Hardwired with 9V battery backup
Detection Technology
Photoelectric
Connectivity Type
Hardwired Interconnected
Interconnection Type
Hardwired Interconnect
Alarm Sound Level
85 dB
Alarm Type
Siren
Battery Type
9V
Sensor Life
10 years
Mounting Type
Ceiling or Wall Mount
Certification
UL Listed
Know before you buy
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