Smoke & CO Detectors · Head to head

Google Nest Protect (Wired) vs Heiman HS1SA Series Smoke Alarm

Full Smart Smoke & CO Detectors comparison in 2026

Updated July 2026
Data from Amazon and official Google and Heiman sites.
2026 verdict
Google Nest Protect (Wired) has the better all-around case than Heiman HS1SA Series Smoke Alarm in 2026, starting with rating, connectivity, and sensors. The main reason it wins is rating, connectivity, and sensors, and alerts and tests itself strengthens that case. Heiman HS1SA Series Smoke Alarm can still be the right pick, but only if price outweighs the wider strengths of Google Nest Protect (Wired). For most setups, Google Nest Protect (Wired) is the smarter buy.
vs
FeatureGoogle Nest Protect (Wired)Heiman HS1SA Series Smoke AlarmWinner
Price$399.99£16.14Heiman HS1SA Series Smoke Alarm
Rating4.64.5Google Nest Protect (Wired)
Connectivity2.4 GHz WiFi, BluetoothZigbeeGoogle Nest Protect (Wired)
SensorsSmoke, CO, Occupancy, Temperature, Humidity, Ambient Light, MotionSmokeGoogle Nest Protect (Wired)
AlertsFire Alerts, CO Alerts, Low Battery AlertsFire Alerts, Low Battery AlertsGoogle Nest Protect (Wired)
Tests ItselfYESNOGoogle Nest Protect (Wired)
PathlightYESNOGoogle Nest Protect (Wired)
Steam CheckYESNOGoogle Nest Protect (Wired)
IntegrationsGoogle Home, Home AssistantSamsung SmartThings, Home AssistantTie
ScreenNONOTie
Built-in SirenYESYESTie
Built-in LightYESYESTie

Frequently Asked Questions

Which is better overall: Google Nest Protect (Wired) or Heiman HS1SA Series Smoke Alarm?

Google Nest Protect (Wired) has the stronger overall profile in this comparison, especially for rating, connectivity, and sensors.

What is the biggest difference between Google Nest Protect (Wired) and Heiman HS1SA Series Smoke Alarm?

Price is one of the clearest differences: Google Nest Protect (Wired) lists $399.99, while Heiman HS1SA Series Smoke Alarm lists £16.14.

Which one looks better on price?

Google Nest Protect (Wired) is listed at $399.99, while Heiman HS1SA Series Smoke Alarm is listed at £16.14. Heiman HS1SA Series Smoke Alarm (better spec).

Who should buy Google Nest Protect (Wired)?

Choose Google Nest Protect (Wired) if your priority is rating and connectivity and that matters more than price.

Who should buy Heiman HS1SA Series Smoke Alarm?

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

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