Winner
Data from Amazon and official Google and Heiman sites.
2026 verdict
For most buyers in 2026, Google Nest Protect (Battery) is the safer pick. It wins the broader comparison through connectivity, integrations, and sensors, while alerts and tests itself helps confirm the result. Pick Heiman HS1SA Series Smoke Alarm only when price and rating is the deciding factor for your setup. In practical terms, Google Nest Protect (Battery) is the easier product to recommend.
| Feature | Google Nest Protect (Battery) | Heiman HS1SA Series Smoke Alarm | Winner |
|---|---|---|---|
| Price | $158.29 | £16.14 | Heiman HS1SA Series Smoke Alarm |
| Rating | 4.3 | 4.4 | Heiman HS1SA Series Smoke Alarm |
| Connectivity | 2.4 GHz Wifi, Bluetooth | Zigbee | Google Nest Protect (Battery) |
| Integrations | Google Home, Home Assistant | Home Assistant | Google Nest Protect (Battery) |
| Sensors | Smoke, CO, Occupancy, Temperature, Humidity, Ambient Light, Motion | Smoke | Google Nest Protect (Battery) |
| Alerts | Fire Alerts, CO Alerts, Low Battery Alerts | Fire Alerts, Low Battery Alerts | Google Nest Protect (Battery) |
| Tests Itself | YES | NO | Google Nest Protect (Battery) |
| Pathlight | YES | NO | Google Nest Protect (Battery) |
| Steam Check | YES | NO | Google Nest Protect (Battery) |
| Screen | NO | NO | Tie |
| Built-in Siren | YES | YES | Tie |
| Built-in Light | YES | YES | Tie |
Winner
$158.29
- + Connectivity: 2.4 GHz Wifi, Bluetooth
- + Integrations: Google Home, Home Assistant
- + Sensors: Smoke, CO, Occupancy, Temperature, Humidity, Ambient Light, Motion
- - Price: $158.29 vs £16.14
- - Rating: 4.3 vs 4.4
5% OFF
£16.99
£16.14
- + Price: £16.14
- + Rating: 4.4
- - Connectivity: Zigbee vs 2.4 GHz Wifi, Bluetooth
- - Integrations: Home Assistant vs Google Home, Home Assistant
Frequently Asked Questions (FAQ)
- Which is better overall: Google Nest Protect (Battery) or Heiman HS1SA Series Smoke Alarm?
- Google Nest Protect (Battery) has the stronger overall profile in this comparison, especially for connectivity, integrations, and sensors.
- What is the biggest difference between Google Nest Protect (Battery) and Heiman HS1SA Series Smoke Alarm?
- Price is one of the clearest differences: Google Nest Protect (Battery) lists $158.29, while Heiman HS1SA Series Smoke Alarm lists £16.14.
- Which one looks better on price?
- Google Nest Protect (Battery) is listed at $158.29, while Heiman HS1SA Series Smoke Alarm is listed at £16.14. Heiman HS1SA Series Smoke Alarm (better spec).
- Who should buy Google Nest Protect (Battery)?
- Choose Google Nest Protect (Battery) if your priority is connectivity and integrations 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 rating and that matters more than connectivity.
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