Winner
Updated October 2026
Data from the official Heiman and X-Sense sites.
2026 verdict
For most buyers in 2026, Heiman Matter Smoke Detector S1-M is the safer pick over X-Sense WiFi Smoke & CO Detector because of price, battery life, and integrations.
Its biggest wins come from price, battery life, and integrations, and tests itself and steam check add more confidence to the verdict. The only strong reason to choose X-Sense WiFi Smoke & CO Detector is if rating, screen, and sensors are more important to you than the overall verdict. In practical terms, Heiman Matter Smoke Detector S1-M is the easier product to recommend.
Connectivity
vs
Works with
Connectivity
- Wi-Fi 2.4 GHz
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| Feature | Heiman Matter Smoke Detector S1-M | X-Sense WiFi Smoke & CO Detector | Winner |
|---|---|---|---|
| Price | $39.99 | £45.00 | Heiman Matter Smoke Detector S1-M |
| Rating | 3.6 | 4.7 | X-Sense WiFi Smoke & CO Detector |
| Battery Life | 5 years | 1 year | Heiman Matter Smoke Detector S1-M |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Home Assistant | Heiman Matter Smoke Detector S1-M |
| Screen | NO | YES | X-Sense WiFi Smoke & CO Detector |
| Sensors | Smoke | Smoke, CO | X-Sense WiFi Smoke & CO Detector |
| Alerts | Fire Alerts, Low Battery Alerts | Fire Alerts, CO Alerts, Low Battery Alerts | X-Sense WiFi Smoke & CO Detector |
| Built-in Light | NO | YES | X-Sense WiFi Smoke & CO Detector |
| Tests Itself | YES | NO | Heiman Matter Smoke Detector S1-M |
| Steam Check | YES | NO | Heiman Matter Smoke Detector S1-M |
| Connectivity | Thread Protocol | 2.4 GHz WiFi | Tie |
| Built-in Siren | YES | YES | Tie |
Winner
$39.99
- + Price: $39.99
- + Battery Life: 5 years
- + Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
- - Rating: 3.6 vs 4.7
- - Screen: NO vs YES
£45.00
- + Rating: 4.7
- + Screen: YES
- + Sensors: Smoke, CO
- - Price: £45.00 vs $39.99
- - Battery Life: 1 year vs 5 years
Frequently Asked Questions
Which is better overall: Heiman Matter Smoke Detector S1-M or X-Sense WiFi Smoke & CO Detector?
Heiman Matter Smoke Detector S1-M has the stronger overall profile in this comparison, especially for price, battery life, and integrations.
What is the biggest difference between Heiman Matter Smoke Detector S1-M and X-Sense WiFi Smoke & CO Detector?
Price is one of the clearest differences: Heiman Matter Smoke Detector S1-M lists $39.99, while X-Sense WiFi Smoke & CO Detector lists £45.00.
Which one looks better on price?
Heiman Matter Smoke Detector S1-M is listed at $39.99, while X-Sense WiFi Smoke & CO Detector is listed at £45.00. Heiman Matter Smoke Detector S1-M (better spec).
Who should buy Heiman Matter Smoke Detector S1-M?
Choose Heiman Matter Smoke Detector S1-M if your priority is price and battery life and that matters more than rating.
Who should buy X-Sense WiFi Smoke & CO Detector?
Choose X-Sense WiFi Smoke & CO Detector if your priority is rating and screen and that matters more than price.
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Compare all 27 Smoke & CO Detectors side by side
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- 27 Smoke & CO Detectors
- 44 specs compared
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Matter Smoke Detector S1-M
- Smoke & CO Detectors
Matter Smoke Detector S1-TM
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