First Alert BRK SC-9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup Reviews Summary
Ratings Breakdown
Rated 4.7 by 3,771 people
Pros from Reviews
- Easy installation
- Works perfectly
- Good price
- 10-year lifespan
- Interconnected units
- Includes battery backup
- Consistent design
- Fast shipping
Cons from Reviews
- Occasional malfunction
- Short lifespan for some
- Defective units reported
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