First Alert SMCO100 / SMCO200V Combo vs First Alert SMCO210 / SMCO210V Combo
Side-by-side specs from each maker.
Only the differences are shown.
| First Alert SMCO100 / SMCO200V Combo | First Alert SMCO210 / SMCO210V Combo | |
|---|---|---|
| Type | Smoke or CO alarm | Smoke or CO alarm |
| Alarm | combo | combo |
| Sensor | Photoelectric (smoke) and electrochemica | Photoelectric (smoke) and electrochemica |
| Power | AA (2 alkaline, replaceable) | 10-year battery (lithium metal, not replaceable) |
| Standards (maker) | Not listed | Conforms to UL 217 10th Edition Standard; Conforms to STD UL2034 |
| Replace after | 10 years | Not listed |
First Alert SMCO100 / SMCO200V Combo
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.
- Replaceable AA batteries
- The maker lists a replacement interval of at least every 10 years
First Alert SMCO210 / SMCO210V Combo
A battery-powered smoke and carbon monoxide combo alarm with a sealed 10-year lithium battery.
- Sealed 10-year battery, no battery swaps
- UL 217 10th edition and UL 2034
- Slim profile