First Alert SMCO210 / SMCO210V Combo
A battery-powered smoke and carbon monoxide combo alarm with a sealed 10-year lithium battery.
Alarm spec sheet
| Type | Smoke and CO combo |
|---|---|
| Sensor | Photoelectric (smoke) and electrochemica |
| Power | 10-year battery (lithium metal, not replaceable) |
| UL standards named | Conforms to UL 217 10th Edition Standard; Conforms to STD UL2034 |
Listed features
- Sealed 10-year battery, no battery swaps
- UL 217 10th edition and UL 2034
- Slim profile
Where to buy the SMCO210 / SMCO210V Combo
Prices and availability change. We may earn a commission from some links.
- Check for recalls: Search the agency's recall list with the model number and date code from the label: CPSC recall search.
- Use and supervision: follow the maker's warnings on the product, and see CPSC's Safe Nursery guide. Check the label and the maker's instructions, and ask your pediatrician about your child.
Full specs
| First Alert SMCO210 / SMCO210V Combo | |
|---|---|
| Type | Smoke or CO alarm |
| Alarm | combo |
| Sensor | Photoelectric (smoke) and electrochemica |
| Power | 10-year battery (lithium metal, not replaceable) |
| Standards (maker) | Conforms to UL 217 10th Edition Standard; Conforms to STD UL2034 |
Compare the SMCO210 / SMCO210V Combo with
How each closest rival differs from the SMCO210 / SMCO210V Combo, from the makers' specs.
- First AlertSMCO500V ComboCompare side by side
- First AlertSM210 / SM210V / SM210L 10-Year Smoke10-yearCompare side by side
- First AlertSMCO100 / SMCO200V Combo10-yearCompare side by side
- First AlertSMICO100-AC Hardwired ComboCompare side by side
SMCO210 / SMCO210V Combo: questions answered
From First Alert's published specs, last checked 2026-11-11.
Where should the First Alert SMCO210 / SMCO210V Combo go?
Maker's standards wording: Conforms to UL 217 10th Edition Standard; Conforms to STD UL2034. Use and supervision: follow the maker's warnings on the product, and see the AAP's safety and prevention pages. Check the label and the maker's instructions, and ask your pediatrician about your child.
Still wondering? Write to us at hello@cribpicks.com and we'll look it up.
More smoke and CO alarms
- First AlertSMI100-AC Hardwired Smoke
- First AlertSC5 Smart Smoke & CO
- First Alert10-Year Battery Photoelectric Smoke Alarm, Slim Profile
- First AlertCO400 Battery Carbon Monoxide Alarm
- First AlertCO605 Plug-in Carbon Monoxide Alarm
- First AlertCO710 Carbon Monoxide Alarm with Digital Temperature Display
Where these specs come from
- firstalert.com/products/10-year-battery-2-in-1-smoke-carbon…
- firstalert.com/products/10-year-battery-2-in-1-smoke-carbon…
Last checked 2026-11-11. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.