Winner
Data from Amazon and official First Alert and X-Sense sites.
2026 verdict
Between First Alert SC5 Hardwire Smart Smoke & CO Alarm and X-Sense Wi-Fi Smoke Alarm, First Alert SC5 Hardwire Smart Smoke & CO Alarm is the better overall pick in 2026, leading on warranty, integrations, and sensors. It builds its lead on warranty, integrations, and sensors, then backs it up with a stronger showing on alerts and steam check. The only strong reason to choose X-Sense Wi-Fi Smoke Alarm is if rating and built-in light is more important to you than the overall verdict. That makes First Alert SC5 Hardwire Smart Smoke & CO Alarm the clearer recommendation in 2026.
| Feature | First Alert SC5 Hardwire Smart Smoke & CO Alarm | X-Sense Wi-Fi Smoke Alarm | Winner |
|---|---|---|---|
| Rating | 2.8 | 4.3 | X-Sense Wi-Fi Smoke Alarm |
| Warranty | 10 years | 5 years | First Alert SC5 Hardwire Smart Smoke & CO Alarm |
| Integrations | Google Home | None | First Alert SC5 Hardwire Smart Smoke & CO Alarm |
| Sensors | Smoke, CO | Smoke | First Alert SC5 Hardwire Smart Smoke & CO Alarm |
| Alerts | Fire Alerts, CO Alerts, Low Battery Alerts | Fire Alerts, Low Battery Alerts | First Alert SC5 Hardwire Smart Smoke & CO Alarm |
| Built-in Light | NO | YES | X-Sense Wi-Fi Smoke Alarm |
| Steam Check | YES | NO | First Alert SC5 Hardwire Smart Smoke & CO Alarm |
| Connectivity | 2.4 GHz WiFi | 2.4 GHz WiFi | Tie |
| Screen | NO | NO | Tie |
| Built-in Siren | YES | YES | Tie |
| Tests Itself | NO | NO | Tie |
| Pathlight | NO | NO | Tie |
Winner
- + Warranty: 10 years
- + Integrations: Google Home
- + Sensors: Smoke, CO
- - Rating: 2.8 vs 4.3
- - Built-in Light: NO vs YES
Price unavailable right now
- + Rating: 4.3
- + Built-in Light: YES
- - Warranty: 5 years vs 10 years
- - Integrations: None vs Google Home
Frequently Asked Questions (FAQ)
Which is better overall: First Alert SC5 Hardwire Smart Smoke & CO Alarm or X-Sense Wi-Fi Smoke Alarm?
First Alert SC5 Hardwire Smart Smoke & CO Alarm has the stronger overall profile in this comparison, especially for warranty, integrations, and sensors.
What is the biggest difference between First Alert SC5 Hardwire Smart Smoke & CO Alarm and X-Sense Wi-Fi Smoke Alarm?
Rating is one of the clearest differences: First Alert SC5 Hardwire Smart Smoke & CO Alarm lists 2.8, while X-Sense Wi-Fi Smoke Alarm lists 4.3.
Who should buy First Alert SC5 Hardwire Smart Smoke & CO Alarm?
Choose First Alert SC5 Hardwire Smart Smoke & CO Alarm if your priority is warranty and integrations and that matters more than rating.
Who should buy X-Sense Wi-Fi Smoke Alarm?
Choose X-Sense Wi-Fi Smoke Alarm if your priority is rating and built-in light and that matters more than warranty.
