First Alert 10-Year Battery Combination Smoke & Carbon Monoxide Alarm
- Smoke Detectors & Fire Alarm
A low-maintenance 2-in-1 smoke and CO alarm for anyone who wants both hazards covered by a single sealed unit.
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How it ranks among the 10 smoke detectors & fire alarms we track
4.1★ across 464 Amazon ratings, Bayesian-smoothed toward the category average.
464 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
1,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 10 smoke detectors & fire alarms we track - how the scorecard works · full smoke detectors & fire alarms data report. Confidence: limited - incomplete product information.Updated 7 days ago. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
This First Alert alarm is a combination smoke and carbon monoxide detector running on a sealed 10 year battery, giving 2-in-1 protection in a single unit with no battery changes for a decade.
Combining both sensors into one sealed unit trades some flexibility (no separate placement for smoke versus CO sensing) for simpler installation and long-term upkeep, since there is only one alarm to mount and no battery to ever swap. An end-of-life warning is the built-in cue for when the whole unit, not just a battery, needs replacing.
- Combination smoke and CO detection
- Sealed 10 year battery
- Precision Detection sensing
- End-of-life warning
Who it's for
Works well for a homeowner wanting one alarm that covers both smoke and CO in a bedroom, hallway, or near a furnace or garage, without dealing with wiring or battery maintenance. Someone needing hardwired interconnection across a house should choose a hardwired combination model instead.
Strengths and trade-offs
Drawn from this product's published specifications.
- 2-in-1 smoke and carbon monoxide protection
- Sealed 10 year battery, no replacements
- End-of-life warning built in
- Simple installation with no wiring
- Not hardwired, so no interconnection with other alarms
- Lower rating than some other alarms in this lineup
Performance notes
Precision Detection sensing is built to reduce false alarms triggered by cooking smoke while still responding early to genuine fire conditions, and the electrochemical side of the sensor handles carbon monoxide. The sealed 10 year battery removes the chirp-and-replace cycle entirely, with an end-of-life warning as the eventual signal to swap the whole alarm.
Specifications
| Brand | First Alert |
|---|
Other First Alert smoke detectors & fire alarms
How it compares
This product against the closest alternatives we track in smoke detectors & fire alarms.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| First Alert 10-Year Battery Combination Smoke & Carbon Monoxide AlarmThis product | 4.1 / 5 | 464 | 2.7 / 5 |
| X-Sense Smoke Detector Carbon Monoxide Detector ComboX-Sense | 4.5 / 5 | 4,200 | 4.5 / 5 |
| Kidde Compact Smoke DetectorKidde | 4.5 / 5 | 940 | 4.3 / 5 |
| Kidde 21007584 I4618 Firex Hardwire Ionization Smoke Detector with Battery BackupwhiteKidde | 4.3 / 5 | 398 | 4.2 / 5 |
| Kidde Smoke DetectorKidde | 4.0 / 5 | 1,400 | 4.2 / 5 |
Similar smoke detectors & fire alarms from other brands
Questions about the First Alert smoke detectors & fire alarms
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Does this First Alert alarm detect both smoke and carbon monoxide?
Yes, it is a 2-in-1 unit that covers both smoke and carbon monoxide with a single sealed battery.
Can this alarm be wired into household power?
No, it runs entirely on its sealed 10 year battery and is not a hardwired unit.
How do you know when this alarm needs to be replaced?
It has an end-of-life warning that signals when the unit itself is due for replacement, since the battery is sealed for the life of the alarm.