








🚨 Stay ahead of danger with 10 years of smart, seamless safety!
The FIRST ALERT SC9120B is a hardwired combination smoke and carbon monoxide alarm featuring convenient adapter plugs for easy replacement, a 10-year lithium battery backup for continuous monitoring, and advanced sensing technology to minimize false alarms. With an 85-decibel siren and clear indicator lights, it delivers reliable alerts, while tamper-resistant design and end-of-life signals ensure long-term safety and peace of mind.







| Brand | First Alert |
| Power Source | Corded Electric |
| Color | white |
| Product Dimensions | 0.07"D x 0.22"W x 0.22"H |
| Item Weight | 0.63 Pounds |
| Alarm | Audible |
| Sensor Type | Electrochemical |
| Global Trade Identification Number | 00029054018786 |
| Material | Plastic |
| Number of Items | 1 |
| Manufacturer | First Alert |
| Style | Hardwired |
| UPC | 029054018786 |
| Part Number | 1039807 |
| Item Weight | 10.1 ounces |
| Item model number | SC9120B |
| Batteries | 1 Lithium Metal batteries required. (included) |
| Is Discontinued By Manufacturer | No |
| Size | No Size |
| Pattern | Alarm |
| Shape | Triangle |
| Item Package Quantity | 1 |
| Included Components | Alarm, Battery |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium Metal |
| Warranty Description | Warranty |
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