Winner
Data from Amazon and official Heiman and Kidde sites.
2026 verdict
Heiman HS1SA Series Smoke Alarm edges out Kidde Smart Smoke Alarm (P4010ACS-WF) in 2026, led by price, rating, and Built-in light. It has the clearer edge on price, rating, and Built-in light, and it stays ahead on its broader overall balance. Kidde Smart Smoke Alarm (P4010ACS-WF) still makes sense if its specific feature mix is your priority, but most buyers should still lean toward Heiman HS1SA Series Smoke Alarm. As a general recommendation, Heiman HS1SA Series Smoke Alarm comes out on top.
| Feature | Heiman HS1SA Series Smoke Alarm | Kidde Smart Smoke Alarm (P4010ACS-WF) | Winner |
|---|---|---|---|
| Price | £16.14 | $40.79 | Heiman HS1SA Series Smoke Alarm |
| Rating | 4.5 | 3.3 | Heiman HS1SA Series Smoke Alarm |
| Built-in Light | YES | NO | Heiman HS1SA Series Smoke Alarm |
| Battery Life | 10 years | 10 years | Tie |
| Connectivity | Zigbee | 2.4 GHz WiFi | Tie |
| Integrations | Samsung SmartThings, Home Assistant | Google Home, Alexa | Tie |
| Screen | NO | NO | Tie |
| Sensors | Smoke | Smoke | Tie |
| Alerts | Fire Alerts, Low Battery Alerts | Fire Alerts, Low Battery Alerts | Tie |
| Built-in Siren | YES | YES | Tie |
| Tests Itself | NO | NO | Tie |
| Pathlight | NO | NO | Tie |
Winner
5% OFF
£16.14
£16.99
- + Price: £16.14
- + Rating: 4.5
- + Built-in Light: YES
- - Price: $40.79 vs £16.14
- - Rating: 3.3 vs 4.5
Frequently Asked Questions
Which is better overall: Heiman HS1SA Series Smoke Alarm or Kidde Smart Smoke Alarm (P4010ACS-WF)?
Heiman HS1SA Series Smoke Alarm has the stronger overall profile in this comparison, especially for price, rating, and Built-in light.
What is the biggest difference between Heiman HS1SA Series Smoke Alarm and Kidde Smart Smoke Alarm (P4010ACS-WF)?
Price is one of the clearest differences: Heiman HS1SA Series Smoke Alarm lists £16.14, while Kidde Smart Smoke Alarm (P4010ACS-WF) lists $40.79.
Which one looks better on price?
Heiman HS1SA Series Smoke Alarm is listed at £16.14, while Kidde Smart Smoke Alarm (P4010ACS-WF) is listed at $40.79. Heiman HS1SA Series Smoke Alarm (better spec).
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 the competing advantages.
Who should buy Kidde Smart Smoke Alarm (P4010ACS-WF)?
Choose Kidde Smart Smoke Alarm (P4010ACS-WF) if your priority is its specific strengths and that matters more than price.
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