Winner
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Prime exclusive deal$35.99
$39.99
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Updated October 2026
Data from the official Heiman and X-Sense sites.
2026 verdict
Heiman Smoke and CO Alarm HM-636THS edges out X-Sense Wi-Fi Smoke Alarm in 2026, led by rating, warranty, and sensors.
It separates itself most clearly on rating, warranty, and sensors, while still looking better on alerts and tests itself. X-Sense Wi-Fi Smoke Alarm remains a niche alternative if connectivity, integrations, and Built-in light matter more than the rest of the comparison. That is why the final call still favors Heiman Smoke and CO Alarm HM-636THS.
vs
Works with
Connectivity
- Wi-Fi 2.4 GHz
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| Feature | Heiman Smoke and CO Alarm HM-636THS | X-Sense Wi-Fi Smoke Alarm | Winner |
|---|---|---|---|
| Rating | 4.4 | 4.3 | Heiman Smoke and CO Alarm HM-636THS |
| Warranty | 10 years | 5 years | Heiman Smoke and CO Alarm HM-636THS |
| Connectivity | None | 2.4 GHz WiFi | X-Sense Wi-Fi Smoke Alarm |
| Integrations | None | Home Assistant | X-Sense Wi-Fi Smoke Alarm |
| Sensors | Smoke, CO | Smoke | Heiman Smoke and CO Alarm HM-636THS |
| Alerts | Fire Alerts, CO Alerts, Low Battery Alerts | Fire Alerts, Low Battery Alerts | Heiman Smoke and CO Alarm HM-636THS |
| Built-in Light | NO | YES | X-Sense Wi-Fi Smoke Alarm |
| Tests Itself | YES | NO | Heiman Smoke and CO Alarm HM-636THS |
| Steam Check | YES | NO | Heiman Smoke and CO Alarm HM-636THS |
| Battery Life | 10 years | 10 years | Tie |
| Screen | NO | NO | Tie |
| Built-in Siren | YES | YES | Tie |
Winner
10% OFF
Prime exclusive deal$35.99
$39.99
- + Rating: 4.4
- + Warranty: 10 years
- + Sensors: Smoke, CO
- - Connectivity: None vs 2.4 GHz WiFi
- - Integrations: None vs Home Assistant
- + Connectivity: 2.4 GHz WiFi
- + Integrations: Home Assistant
- + Built-in Light: YES
- - Rating: 4.3 vs 4.4
- - Warranty: 5 years vs 10 years
Frequently Asked Questions
Which is better overall: Heiman Smoke and CO Alarm HM-636THS or X-Sense Wi-Fi Smoke Alarm?
Heiman Smoke and CO Alarm HM-636THS has the stronger overall profile in this comparison, especially for rating, warranty, and sensors.
What is the biggest difference between Heiman Smoke and CO Alarm HM-636THS and X-Sense Wi-Fi Smoke Alarm?
Rating is one of the clearest differences: Heiman Smoke and CO Alarm HM-636THS lists 4.4, while X-Sense Wi-Fi Smoke Alarm lists 4.3.
Who should buy Heiman Smoke and CO Alarm HM-636THS?
Choose Heiman Smoke and CO Alarm HM-636THS if your priority is rating and warranty and that matters more than connectivity.
Who should buy X-Sense Wi-Fi Smoke Alarm?
Choose X-Sense Wi-Fi Smoke Alarm if your priority is connectivity and integrations and that matters more than rating.
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