






🔥 Stay safe, stay savvy — smoke detection that works as hard as you do!
The First Alert SMI100 is a 2-pack battery-operated smoke alarm featuring advanced Precision Detection technology that minimizes false alarms while providing early fire warnings. Designed for easy installation and maintenance, it includes a front-access battery compartment, end-of-life alerts, and a test/silence button to ensure reliable performance and peace of mind.







| Brand | First Alert |
| Style | Precision Detection |
| Power Source | Battery Powered |
| Color | White |
| Item Weight | 9.6 ounces |
| Sensor Type | Ionization |
| Number of Items | 2 |
| Manufacturer | Resideo |
| UPC | 029054022400 |
| Part Number | SMI100 |
| Product Dimensions | 5.6 x 5.6 x 1.9 inches |
| Item model number | SMI100 |
| Batteries | 1 9V batteries required. (included) |
| Size | 2-Pack |
| Pattern | SMI100 |
| Item Package Quantity | 1 |
| Included Components | 9V Alkaline Battery |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Zinc Carbon |
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