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Smoke & CO Detectors · Head to head

Heiman Interconnected CO Alarm C1-R vs Heiman Interconnected Smoke Alarm S1-R

Full Smart Smoke & CO Detectors comparison in 2026

Data from Amazon and official Heiman site.
2026 verdict
Heiman Interconnected Smoke Alarm S1-R is the more complete option versus Heiman Interconnected CO Alarm C1-R in 2026, helped most by price, rating, and steam check.
Heiman Interconnected Smoke Alarm S1-R
Winner
Heiman Interconnected Smoke Alarm S1-R
$25.99
Buy on Amazon USACheck price
It builds its lead on price, rating, and steam check, then backs it up with a stronger showing on its broader overall balance. Heiman Interconnected CO Alarm C1-R remains a niche alternative if battery life matters more than the rest of the comparison. In practical terms, Heiman Interconnected Smoke Alarm S1-R is the easier product to recommend.
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FeatureHeiman Interconnected CO Alarm C1-RHeiman Interconnected Smoke Alarm S1-RWinner
Price$26.99$25.99Heiman Interconnected Smoke Alarm S1-R
Rating4.04.2Heiman Interconnected Smoke Alarm S1-R
Battery Life10 years8.3 yearsHeiman Interconnected CO Alarm C1-R
Steam CheckNOYESHeiman Interconnected Smoke Alarm S1-R
Connectivity2.4 GHz WiFi, Other2.4 GHz WiFi, OtherTie
IntegrationsGoogle Home, Samsung SmartThings, Home AssistantGoogle Home, Samsung SmartThings, Home AssistantTie
ScreenNONOTie
SensorsCOSmokeTie
AlertsCO Alerts, Low Battery AlertsFire Alerts, Low Battery AlertsTie
Built-in SirenYESYESTie
Built-in LightNONOTie
Tests ItselfYESYESTie

Frequently Asked Questions

Which is better overall: Heiman Interconnected CO Alarm C1-R or Heiman Interconnected Smoke Alarm S1-R?

Heiman Interconnected Smoke Alarm S1-R has the stronger overall profile in this comparison, especially for price, rating, and steam check.

What is the biggest difference between Heiman Interconnected CO Alarm C1-R and Heiman Interconnected Smoke Alarm S1-R?

Price is one of the clearest differences: Heiman Interconnected CO Alarm C1-R lists $26.99, while Heiman Interconnected Smoke Alarm S1-R lists $25.99.

Which one looks better on price?

Heiman Interconnected CO Alarm C1-R is listed at $26.99, while Heiman Interconnected Smoke Alarm S1-R is listed at $25.99. Heiman Interconnected Smoke Alarm S1-R (better spec).

Who should buy Heiman Interconnected CO Alarm C1-R?

Choose Heiman Interconnected CO Alarm C1-R if your priority is battery life and that matters more than price.

Who should buy Heiman Interconnected Smoke Alarm S1-R?

Choose Heiman Interconnected Smoke Alarm S1-R if your priority is price and rating and that matters more than battery life.

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
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