First Alert SMCO100 / SMCO200V Combo vs First Alert SMCO500V Combo
Side-by-side specs from each maker.
Only the differences are shown.
| First Alert SMCO100 / SMCO200V Combo | First Alert SMCO500V 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) | AA (2 alkaline, replaceable) |
| Interconnect | Not listed | wireless |
| 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 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.
- Voice alerts with location
- Wireless interconnect with up to 12 other First Alert or BRK alarms and 6 other compatible devices
- Replaceable AA batteries