First Alert SMCO500V Combo
A battery-operated smoke and CO combo alarm with voice alerts that give the type and location of the danger. It links wirelessly with other First Alert or BRK alarms.
Alarm spec sheet
| Type | Smoke and CO combo |
|---|---|
| Sensor | Photoelectric (smoke) and electrochemica |
| Power | AA (2 alkaline, replaceable) |
| Interconnect | Wireless |
| Voice alerts | Yes |
Listed features
- Voice alerts with location
- Wireless interconnect with up to 12 other First Alert or BRK alarms and 6 other compatible devices
- Replaceable AA batteries
Where to buy the SMCO500V 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 SMCO500V Combo | |
|---|---|
| Type | Smoke or CO alarm |
| Alarm | combo |
| Sensor | Photoelectric (smoke) and electrochemica |
| Power | AA (2 alkaline, replaceable) |
| Interconnect | wireless |
Compare the SMCO500V Combo with
How each closest rival differs from the SMCO500V Combo, from the makers' specs.
- First AlertSMCO210 / SMCO210V 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
SMCO500V Combo: questions answered
From First Alert's published specs, last checked 2026-11-11.
Where should the First Alert SMCO500V 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
Last checked 2026-11-11. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.