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Smoke & CO Detectors · Head to head

Heiman HS1SA Series Smoke Alarm vs Heiman Interconnected CO Alarm C1-R

Full Smart Smoke & CO Detectors comparison in 2026

Data from Amazon and official Heiman site.
2026 verdict
For most buyers in 2026, Heiman Interconnected CO Alarm C1-R is the safer pick over Heiman HS1SA Series Smoke Alarm because of connectivity, integrations, and tests itself.
Heiman Interconnected CO Alarm C1-R
Winner
Heiman Interconnected CO Alarm C1-R
$26.99$29.9810% OFF
Buy on Amazon USACheck price
It builds its lead on connectivity, integrations, and tests itself, then backs it up with a stronger showing on its broader overall balance. There is still a case for Heiman HS1SA Series Smoke Alarm, but mainly if price, rating, and Built-in light are what you value most. That is why Heiman Interconnected CO Alarm C1-R wins the verdict here.
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FeatureHeiman HS1SA Series Smoke AlarmHeiman Interconnected CO Alarm C1-RWinner
Price£16.14$26.99Heiman HS1SA Series Smoke Alarm
Rating4.54.0Heiman HS1SA Series Smoke Alarm
ConnectivityZigbee2.4 GHz WiFi, OtherHeiman Interconnected CO Alarm C1-R
IntegrationsSamsung SmartThings, Home AssistantGoogle Home, Samsung SmartThings, Home AssistantHeiman Interconnected CO Alarm C1-R
Built-in LightYESNOHeiman HS1SA Series Smoke Alarm
Tests ItselfNOYESHeiman Interconnected CO Alarm C1-R
Battery Life10 years10 yearsTie
ScreenNONOTie
SensorsSmokeCOTie
AlertsFire Alerts, Low Battery AlertsCO Alerts, Low Battery AlertsTie
Built-in SirenYESYESTie
PathlightNONOTie

Frequently Asked Questions

Which is better overall: Heiman HS1SA Series Smoke Alarm or Heiman Interconnected CO Alarm C1-R?

Heiman Interconnected CO Alarm C1-R has the stronger overall profile in this comparison, especially for connectivity, integrations, and tests itself.

What is the biggest difference between Heiman HS1SA Series Smoke Alarm and Heiman Interconnected CO Alarm C1-R?

Price is one of the clearest differences: Heiman HS1SA Series Smoke Alarm lists £16.14, while Heiman Interconnected CO Alarm C1-R lists $26.99.

Which one looks better on price?

Heiman HS1SA Series Smoke Alarm is listed at £16.14, while Heiman Interconnected CO Alarm C1-R is listed at $26.99. Heiman HS1SA Series Smoke Alarm (better spec).

Who should buy Heiman HS1SA Series Smoke Alarm?

Choose Heiman HS1SA Series Smoke Alarm if your priority is price and rating and that matters more than connectivity.

Who should buy Heiman Interconnected CO Alarm C1-R?

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

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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