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Smoke & CO Detectors · Head to head

Heiman Interconnected Smoke Alarm S1-R vs X-Sense Wi-Fi Carbon Monoxide Alarm

Full Smart Smoke & CO Detectors comparison in 2026

Data from Amazon and official Heiman and X-Sense sites.
2026 verdict
In this 2026 Heiman Interconnected Smoke Alarm S1-R vs X-Sense Wi-Fi Carbon Monoxide Alarm comparison, Heiman Interconnected Smoke Alarm S1-R comes out ahead thanks to connectivity, integrations, and tests itself.
Heiman Interconnected Smoke Alarm S1-R
Winner
Heiman Interconnected Smoke Alarm S1-R
$25.99
Buy on Amazon USACheck price
The comparison tilts its way because of connectivity, integrations, and tests itself, with steam check keeping it in front. X-Sense Wi-Fi Carbon Monoxide Alarm is the better fit only for buyers who prioritize rating, screen, and Built-in light above everything else here. For most setups, Heiman Interconnected Smoke Alarm S1-R is the smarter buy.
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FeatureHeiman Interconnected Smoke Alarm S1-RX-Sense Wi-Fi Carbon Monoxide AlarmWinner
Rating4.24.6X-Sense Wi-Fi Carbon Monoxide Alarm
Connectivity2.4 GHz WiFi, Other2.4 GHz WiFiHeiman Interconnected Smoke Alarm S1-R
IntegrationsGoogle Home, Samsung SmartThings, Home AssistantHome AssistantHeiman Interconnected Smoke Alarm S1-R
ScreenNOYESX-Sense Wi-Fi Carbon Monoxide Alarm
Built-in LightNOYESX-Sense Wi-Fi Carbon Monoxide Alarm
Tests ItselfYESNOHeiman Interconnected Smoke Alarm S1-R
Steam CheckYESNOHeiman Interconnected Smoke Alarm S1-R
SensorsSmokeCOTie
AlertsFire Alerts, Low Battery AlertsCO Alerts, Low Battery AlertsTie
Built-in SirenYESYESTie
PathlightNONOTie

Frequently Asked Questions

Which is better overall: Heiman Interconnected Smoke Alarm S1-R or X-Sense Wi-Fi Carbon Monoxide Alarm?

Heiman Interconnected Smoke Alarm S1-R has the stronger overall profile in this comparison, especially for connectivity, integrations, and tests itself.

What is the biggest difference between Heiman Interconnected Smoke Alarm S1-R and X-Sense Wi-Fi Carbon Monoxide Alarm?

Rating is one of the clearest differences: Heiman Interconnected Smoke Alarm S1-R lists 4.2, while X-Sense Wi-Fi Carbon Monoxide Alarm lists 4.6.

Who should buy Heiman Interconnected Smoke Alarm S1-R?

Choose Heiman Interconnected Smoke Alarm S1-R if your priority is connectivity and integrations and that matters more than rating.

Who should buy X-Sense Wi-Fi Carbon Monoxide Alarm?

Choose X-Sense Wi-Fi Carbon Monoxide Alarm if your priority is rating and screen and that matters more than connectivity.

Full comparison table

Compare all 24 Smoke & CO Detectors side by side

You are looking at two of them. The full table lines up all Smoke & CO Detectors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.

  • 24 Smoke & CO Detectors
  • 44 specs compared
  • 41 filters
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