Winner
Updated October 2026
Data from the official Heiman site.
2026 verdict
Heiman Interconnected Smoke Alarm S1-R beats Heiman Smoke Alarm HM-636PHS in 2026, with its clearest edge on rating, connectivity, and integrations.
The main reason it wins is rating, connectivity, and integrations, and its broader overall balance strengthens that case. Heiman Smoke Alarm HM-636PHS can still be the right pick, but only if price and battery life outweigh the wider strengths of Heiman Interconnected Smoke Alarm S1-R. As a general recommendation, Heiman Interconnected Smoke Alarm S1-R comes out on top.
Works with
Connectivity
- Wi-Fi 2.4 GHz
vs
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$29.99
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| Feature | Heiman Interconnected Smoke Alarm S1-R | Heiman Smoke Alarm HM-636PHS | Winner |
|---|---|---|---|
| Price | $25.99 | $24.99 | Heiman Smoke Alarm HM-636PHS |
| Rating | 4.4 | 4.2 | Heiman Interconnected Smoke Alarm S1-R |
| Battery Life | 8.3 years | 10 years | Heiman Smoke Alarm HM-636PHS |
| Connectivity | 2.4 GHz WiFi, Other | None | Heiman Interconnected Smoke Alarm S1-R |
| Integrations | Google Home, Samsung SmartThings, Home Assistant | None | Heiman Interconnected Smoke Alarm S1-R |
| 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 |
| Built-in Light | NO | NO | Tie |
| Tests Itself | YES | YES | Tie |
| Pathlight | NO | NO | Tie |
Winner
$25.99
- + Rating: 4.4
- + Connectivity: 2.4 GHz WiFi, Other
- + Integrations: Google Home, Samsung SmartThings, Home Assistant
- - Price: $25.99 vs $24.99
- - Battery Life: 8.3 years vs 10 years
17% OFF
Prime exclusive deal$24.99
$29.99
- + Price: $24.99
- + Battery Life: 10 years
- - Rating: 4.2 vs 4.4
- - Connectivity: None vs 2.4 GHz WiFi, Other
Frequently Asked Questions
Which is better overall: Heiman Interconnected Smoke Alarm S1-R or Heiman Smoke Alarm HM-636PHS?
Heiman Interconnected Smoke Alarm S1-R has the stronger overall profile in this comparison, especially for rating, connectivity, and integrations.
What is the biggest difference between Heiman Interconnected Smoke Alarm S1-R and Heiman Smoke Alarm HM-636PHS?
Price is one of the clearest differences: Heiman Interconnected Smoke Alarm S1-R lists $25.99, while Heiman Smoke Alarm HM-636PHS lists $24.99.
Which one looks better on price?
Heiman Interconnected Smoke Alarm S1-R is listed at $25.99, while Heiman Smoke Alarm HM-636PHS is listed at $24.99. Heiman Smoke Alarm HM-636PHS (better spec).
Who should buy Heiman Interconnected Smoke Alarm S1-R?
Choose Heiman Interconnected Smoke Alarm S1-R if your priority is rating and connectivity and that matters more than price.
Who should buy Heiman Smoke Alarm HM-636PHS?
Choose Heiman Smoke Alarm HM-636PHS if your priority is price and battery life and that matters more than rating.
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