First Alert SMCO100 / SMCO200V Combo
The First Alert SMCO100 / SMCO200V Combo lists a 10-year life, per First Alert. A battery-powered smoke and CO combo alarm that runs on two replaceable AA batteries. The maker says the unit itself should be replaced at least every 10 years.
Alarm spec sheet
| Type | Smoke and CO combo |
|---|---|
| Sensor | Photoelectric (smoke) and electrochemica |
| Power | AA (2 alkaline, replaceable) |
| Listed life | 10 years, per the maker |
Listed features
- Replaceable AA batteries
- The maker lists a replacement interval of at least every 10 years
Where to buy the SMCO100 / SMCO200V Combo
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- 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 SMCO100 / SMCO200V Combo | |
|---|---|
| Type | Smoke or CO alarm |
| Alarm | combo |
| Sensor | Photoelectric (smoke) and electrochemica |
| Power | AA (2 alkaline, replaceable) |
| Replace after | 10 years |
Compare the SMCO100 / SMCO200V Combo with
How each closest rival differs from the SMCO100 / SMCO200V Combo, from the makers' specs.
- First AlertSMCO210 / SMCO210V ComboCompare side by side
- First AlertSMCO500V ComboCompare side by side
- First AlertSM210 / SM210V / SM210L 10-Year Smoke10-yearCompare side by side
- First AlertSMICO100-AC Hardwired ComboCompare side by side
SMCO100 / SMCO200V Combo: questions answered
From First Alert's published specs, last checked 2026-11-11.
Where should the First Alert SMCO100 / SMCO200V Combo go?
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/battery-operated-2-in-1-smoke-carbon…
- firstalert.com/products/battery-operated-2-in-1-smoke-carbon…
Last checked 2026-11-11. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.