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Smoke & CO Detectors · Head to head

Heiman HS1SA-E Zigbee Smoke Alarm vs Heiman Smart CO Alarm

Full Smart Smoke & CO Detectors comparison in 2026

Updated September 2026
Data from Amazon and official Heiman site.
2026 verdict
Heiman HS1SA-E Zigbee Smoke Alarm
Winner
Heiman HS1SA-E Zigbee Smoke Alarm
€34.99
Buy on Amazon GermanyCheck price
Same brand, different hazard: the Heiman HS1SA Series Smoke Alarm takes this Heiman-vs-Heiman matchup on the strength of its lower price and higher owner rating, while the Heiman Smart CO Alarm brings the wider smart home reach instead, connecting to Google Home, Alexa, Apple HomeKit, Samsung SmartThings and Home Assistant through Matter over Thread versus the HS1SA's Zigbee-and-hub setup. The two are not really competing for the same job: the HS1SA is a compact, adhesive-mountable smoke-only alarm, while the Smart CO Alarm detects only carbon monoxide, so most households will end up wanting both rather than choosing one over the other. Both run on a replaceable battery rated for about a decade and include a built-in siren and light for local alerts. Buyers who need a discreet, budget smoke alarm for a bedroom or hallway should get the Heiman HS1SA Series Smoke Alarm, while anyone monitoring a gas appliance or attached garage for carbon monoxide, and who wants broad Matter compatibility, should pick the Heiman Smart CO Alarm.
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FeatureHeiman HS1SA-E Zigbee Smoke AlarmHeiman Smart CO AlarmWinner
Price€34.99$47.99Heiman HS1SA-E Zigbee Smoke Alarm
Rating4.53.7Heiman HS1SA-E Zigbee Smoke Alarm
Battery Life5 years10 yearsHeiman Smart CO Alarm
IntegrationsSamsung SmartThings, Home AssistantGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterHeiman Smart CO Alarm
ConnectivityZigbeeThread ProtocolTie
ScreenNONOTie
SensorsSmokeCOTie
AlertsFire Alerts, Low Battery AlertsCO Alerts, Low Battery AlertsTie
Built-in SirenYESYESTie
Built-in LightYESYESTie
Tests ItselfNONOTie
PathlightNONOTie

Frequently Asked Questions

Which is better overall: the Heiman HS1SA Series Smoke Alarm or the Heiman Smart CO Alarm?

The Heiman HS1SA Series Smoke Alarm wins overall on price and owner rating. The Heiman Smart CO Alarm still wins on smart home integrations, and the two detect different hazards entirely.

What is the biggest difference between these two Heiman alarms?

Hazard type. The Heiman HS1SA Series Smoke Alarm detects smoke only, while the Heiman Smart CO Alarm detects carbon monoxide only, despite both coming from the same brand.

Do both alarms need a hub to connect to a smart home?

Yes, in different ways. The Heiman HS1SA Series Smoke Alarm needs a Zigbee hub such as Home Assistant or Samsung SmartThings, while the Heiman Smart CO Alarm needs a Thread Border Router for its Matter-based integrations.

Which one connects to more smart home platforms?

The Heiman Smart CO Alarm, through Matter over Thread, reaches Google Home, Alexa, Apple HomeKit, Samsung SmartThings and Home Assistant. The Heiman HS1SA Series Smoke Alarm connects over Zigbee to Samsung SmartThings and Home Assistant.

Who should buy the Heiman HS1SA Series Smoke Alarm?

Buyers who want a compact, budget-friendly smoke alarm for a bedroom, hallway or campervan, easily mounted with screws or the included adhesive pad.

Who should buy the Heiman Smart CO Alarm?

Households monitoring a gas boiler, fireplace or attached garage for carbon monoxide who want broad Matter compatibility across Google, Alexa and Apple ecosystems.

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