Smoke & CO Detectors · Head to head

Heiman Matter Smoke Detector S1-M vs Kidde Smart Smoke Alarm (P4010ACS-WF)

Full Smart Smoke & CO Detectors comparison in 2026

Data from Amazon and official Heiman and Kidde sites.
2026 verdict
In 2026, the recommendation leans toward Heiman Matter Smoke Detector S1-M over Kidde Smart Smoke Alarm (P4010ACS-WF), driven by rating, integrations, and steam check.
Heiman Matter Smoke Detector S1-M
Winner
Heiman Matter Smoke Detector S1-M
$39.99

Last recorded price

Buy on Amazon USA
It has the clearer edge on rating, integrations, and steam check, and it stays ahead on its broader overall balance. Kidde Smart Smoke Alarm (P4010ACS-WF) still makes sense if battery life is your priority, but most buyers should still lean toward Heiman Matter Smoke Detector S1-M. For most setups, Heiman Matter Smoke Detector S1-M is the smarter buy.
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FeatureHeiman Matter Smoke Detector S1-MKidde Smart Smoke Alarm (P4010ACS-WF)Winner
Rating3.63.2Heiman Matter Smoke Detector S1-M
Battery Life5 years10 yearsKidde Smart Smoke Alarm (P4010ACS-WF)
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Home AssistantHeiman Matter Smoke Detector S1-M
Steam CheckYESNOHeiman Matter Smoke Detector S1-M
ConnectivityThread Protocol2.4 GHz WiFiTie
ScreenNONOTie
SensorsSmokeSmokeTie
AlertsFire Alerts, Low Battery AlertsFire Alerts, Low Battery AlertsTie
Built-in SirenYESYESTie
Built-in LightNONOTie
PathlightNONOTie
Kidde

Kidde Smart Smoke Alarm (P4010ACS-WF)

Prime exclusive deal

Last recorded priceOct 10, 2026$89.99

Currently unavailable on Amazon USA
See on Amazon USA
  • + Battery Life: 10 years
  • - Rating: 3.2 vs 3.6
  • - Integrations: Google Home, Home Assistant vs Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Heiman Matter Smoke Detector S1-M
  • Kidde Smart Smoke Alarm (P4010ACS-WF)

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Frequently Asked Questions

Which is better overall: Heiman Matter Smoke Detector S1-M or Kidde Smart Smoke Alarm (P4010ACS-WF)?

Heiman Matter Smoke Detector S1-M has the stronger overall profile in this comparison, especially for rating, integrations, and steam check.

What is the biggest difference between Heiman Matter Smoke Detector S1-M and Kidde Smart Smoke Alarm (P4010ACS-WF)?

Rating is one of the clearest differences: Heiman Matter Smoke Detector S1-M lists 3.6, while Kidde Smart Smoke Alarm (P4010ACS-WF) lists 3.2.

Who should buy Heiman Matter Smoke Detector S1-M?

Choose Heiman Matter Smoke Detector S1-M if your priority is rating and integrations and that matters more than battery life.

Who should buy Kidde Smart Smoke Alarm (P4010ACS-WF)?

Choose Kidde Smart Smoke Alarm (P4010ACS-WF) if your priority is battery life and that matters more than rating.

Full comparison table

Compare all 25 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.

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