Winner
Data from Amazon and official Google and Heiman sites.
2026 verdict
For this 2026 head-to-head, Google Nest Protect (Wired) has the better all-around case. The main reason it wins is rating, connectivity, and integrations, and sensors and alerts 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.
| Feature | Google Nest Protect (Wired) | Heiman HS1SA Series Smoke Alarm | Winner |
|---|---|---|---|
| Price | $126.65 | £16.14 | Heiman HS1SA Series Smoke Alarm |
| Rating | 4.5 | 4.4 | Google Nest Protect (Wired) |
| Connectivity | 2.4 GHz Wifi, Bluetooth | Zigbee | Google Nest Protect (Wired) |
| Integrations | Google Home, Home Assistant | Home Assistant | Google Nest Protect (Wired) |
| Sensors | Smoke, CO, Occupancy, Temperature, Humidity, Ambient Light, Motion | Smoke | Google Nest Protect (Wired) |
| Alerts | Fire Alerts, CO Alerts, Low Battery Alerts | Fire Alerts, Low Battery Alerts | Google Nest Protect (Wired) |
| Tests Itself | YES | NO | Google Nest Protect (Wired) |
| Pathlight | YES | NO | Google Nest Protect (Wired) |
| Steam Check | YES | NO | Google Nest Protect (Wired) |
| Screen | NO | NO | Tie |
| Built-in Siren | YES | YES | Tie |
| Built-in Light | YES | YES | Tie |
Winner
15% OFF
$149.00
$126.65
- + Rating: 4.5
- + Connectivity: 2.4 GHz Wifi, Bluetooth
- + Integrations: Google Home, Home Assistant
- - Price: $126.65 vs £16.14
5% OFF
£16.99
£16.14
- + Price: £16.14
- - Rating: 4.4 vs 4.5
- - Connectivity: Zigbee vs 2.4 GHz Wifi, Bluetooth
Frequently Asked Questions (FAQ)
- 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 integrations.
- 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 $126.65, while Heiman HS1SA Series Smoke Alarm lists £16.14.
- Which one looks better on price?
- Google Nest Protect (Wired) is listed at $126.65, 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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