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 price, rating, and integrations. It has the clearer edge on price, rating, and integrations, and it stays ahead on tests itself and steam check. 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.
vs
FeatureHeiman Matter Smoke Detector S1-MKidde Smart Smoke Alarm (P4010ACS-WF)Winner
Price$39.99$40.79Heiman Matter Smoke Detector S1-M
Rating3.73.3Heiman 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, AlexaHeiman Matter Smoke Detector S1-M
Tests ItselfYESNOHeiman 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

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 price, rating, and integrations.

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

Price is one of the clearest differences: Heiman Matter Smoke Detector S1-M lists $39.99, while Kidde Smart Smoke Alarm (P4010ACS-WF) lists $40.79.

Which one looks better on price?

Heiman Matter Smoke Detector S1-M is listed at $39.99, while Kidde Smart Smoke Alarm (P4010ACS-WF) is listed at $40.79. Heiman Matter Smoke Detector S1-M (better spec).

Who should buy Heiman Matter Smoke Detector S1-M?

Choose Heiman Matter Smoke Detector S1-M if your priority is price and rating 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 price.

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