Updated November 2026
Data from the official Heiman and X-Sense sites.
2026 verdict
In 2026, the recommendation leans toward X-Sense Wi-Fi Smoke Alarm over Heiman Carbon Monoxide Detector C1-S, driven by connectivity, integrations, and Built-in light.
The comparison tilts its way because of connectivity, integrations, and Built-in light, with its broader overall balance keeping it in front. Pick Heiman Carbon Monoxide Detector C1-S only when rating and warranty are the deciding factor for your setup. For the average buyer, X-Sense Wi-Fi Smoke Alarm is the safer choice.
vs
Winner
Works with
Connectivity
- Wi-Fi 2.4 GHz
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| Feature | Heiman Carbon Monoxide Detector C1-S | X-Sense Wi-Fi Smoke Alarm | Winner |
|---|---|---|---|
| Rating | 4.4 | 4.3 | Heiman Carbon Monoxide Detector C1-S |
| Warranty | 10 years | 5 years | Heiman Carbon Monoxide Detector C1-S |
| Connectivity | None | 2.4 GHz WiFi | X-Sense Wi-Fi Smoke Alarm |
| Integrations | None | Home Assistant | X-Sense Wi-Fi Smoke Alarm |
| Built-in Light | NO | YES | X-Sense Wi-Fi Smoke Alarm |
| Battery Life | 10 years | 10 years | Tie |
| Screen | NO | NO | Tie |
| Sensors | CO | Smoke | Tie |
| Alerts | CO Alerts, Low Battery Alerts | Fire Alerts, Low Battery Alerts | Tie |
| Built-in Siren | YES | YES | Tie |
| Tests Itself | NO | NO | Tie |
| Pathlight | NO | NO | Tie |
$29.99
- + Rating: 4.4
- + Warranty: 10 years
- - Connectivity: None vs 2.4 GHz WiFi
- - Integrations: None vs Home Assistant
Winner
- + 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 Carbon Monoxide Detector C1-S or X-Sense Wi-Fi Smoke Alarm?
X-Sense Wi-Fi Smoke Alarm has the stronger overall profile in this comparison, especially for connectivity, integrations, and Built-in light.
What is the biggest difference between Heiman Carbon Monoxide Detector C1-S and X-Sense Wi-Fi Smoke Alarm?
Rating is one of the clearest differences: Heiman Carbon Monoxide Detector C1-S lists 4.4, while X-Sense Wi-Fi Smoke Alarm lists 4.3.
Who should buy Heiman Carbon Monoxide Detector C1-S?
Choose Heiman Carbon Monoxide Detector C1-S 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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Compare all 28 Smoke & CO Detectors side by side
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- 28 Smoke & CO Detectors
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