Data from Amazon and official Aqara and Heiman sites.
2026 verdict
Heiman Interconnected CO Alarm C1-R wins the 2026 matchup against Aqara Smart Smoke Detector, mainly on price, connectivity, and alerts.
It separates itself most clearly on price, connectivity, and alerts, while still looking better on tests itself. Aqara Smart Smoke Detector still makes sense if rating, integrations, and Built-in light are your priority, but most buyers should still lean toward Heiman Interconnected CO Alarm C1-R. Overall, Heiman Interconnected CO Alarm C1-R makes more sense for most people.
Price alerts
Smoke & CO Detector prices change while you decide
We check the price of every Smoke & CO Detector in the catalog daily and email you the drops, whichever one you pick.
No spam. Unsubscribe in one click.
| Feature | Aqara Smart Smoke Detector | Heiman Interconnected CO Alarm C1-R | Winner |
|---|---|---|---|
| Price | €37.99 | $26.99 | Heiman Interconnected CO Alarm C1-R |
| Rating | 4.3 | 4.0 | Aqara Smart Smoke Detector |
| Connectivity | Zigbee | 2.4 GHz WiFi, Other | Heiman Interconnected CO Alarm C1-R |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Google Home, Samsung SmartThings, Home Assistant | Aqara Smart Smoke Detector |
| Alerts | Fire Alerts | CO Alerts, Low Battery Alerts | Heiman Interconnected CO Alarm C1-R |
| Built-in Light | YES | NO | Aqara Smart Smoke Detector |
| Tests Itself | NO | YES | Heiman Interconnected CO Alarm C1-R |
| Battery Life | 10 years | 10 years | Tie |
| Screen | NO | NO | Tie |
| Sensors | Smoke | CO | Tie |
| Built-in Siren | YES | YES | Tie |
| Pathlight | NO | NO | Tie |
16% OFF
€37.99
€44.99
- + Rating: 4.3
- + Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
- + Built-in Light: YES
- - Price: €37.99 vs $26.99
- - Connectivity: Zigbee vs 2.4 GHz WiFi, Other
Winner
10% OFF
$26.99
$29.98
- + Price: $26.99
- + Connectivity: 2.4 GHz WiFi, Other
- + Alerts: CO Alerts, Low Battery Alerts
- - Rating: 4.0 vs 4.3
- - Integrations: Google Home, Samsung SmartThings, Home Assistant vs Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
Frequently Asked Questions
Which is better overall: Aqara Smart Smoke Detector or Heiman Interconnected CO Alarm C1-R?
Heiman Interconnected CO Alarm C1-R has the stronger overall profile in this comparison, especially for price, connectivity, and alerts.
What is the biggest difference between Aqara Smart Smoke Detector and Heiman Interconnected CO Alarm C1-R?
Price is one of the clearest differences: Aqara Smart Smoke Detector lists €37.99, while Heiman Interconnected CO Alarm C1-R lists $26.99.
Which one looks better on price?
Aqara Smart Smoke Detector is listed at €37.99, while Heiman Interconnected CO Alarm C1-R is listed at $26.99. Heiman Interconnected CO Alarm C1-R (better spec).
Who should buy Aqara Smart Smoke Detector?
Choose Aqara Smart Smoke Detector if your priority is rating and integrations and that matters more than price.
Who should buy Heiman Interconnected CO Alarm C1-R?
Choose Heiman Interconnected CO Alarm C1-R if your priority is price and connectivity and that matters more than rating.
Full comparison table
Compare all 24 Smoke & CO Detectors side by side
You are looking at two of them. The full table lines up all Smoke & CO Detectors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
- 24 Smoke & CO Detectors
- 44 specs compared
- 41 filters
YoLinkPhotoelectric Smoke Alarm
$49.99
HeimanMatter Smoke Detector S1-TM
$49.98
X-SenseWi-Fi CO Alarm
X-SenseSC07-MR Smart Smoke & CO Alarm
HeimanHS1SA Series Smoke Alarm
5% OFF£16.99£16.14
X-SenseWiFi Smoke & CO Detector
X-SenseWi-Fi Smoke Alarm
GoogleNest Protect (Battery)
$406.99
GoogleNest Protect (Wired)
$449.99
ShellySmoke Alarm
25% OFF€53.43€39.95
X-SenseXC0M-iR Smart Carbon Monoxide Alarm with Voice Alerts
- Aqara
Smart Smoke Detector
16% OFF€44.99€37.99 
KiddeSmart Smoke & CO Detector with Ring
$69.97
HeimanInterconnected Smoke Alarm S1-R
$25.99
HeimanInterconnected CO Alarm C1-R
10% OFF$29.98$26.99
First AlertSC5 Battery Smart Smoke & CO Alarm
HeimanSmart CO Alarm
20% OFF$59.99$47.99
HeimanMatter Smoke Detector S1-M
$39.99
First AlertSMCO410 Smoke Detector & CO Alarm
$64.98
KiddeSmart Smoke + Indoor Air Quality Alarm
$106.56
Air Quality MonitorsAqaraTVOC Air Quality Monitor
3.4(467)14% OFFC$49.99C$42.99
CamerasAqaraCamera E1
4.2(1,813)9% OFF$69.99$63.99
CamerasAqaraCamera G100
4.2(1,673)$39.99
CamerasAqaraCamera Hub G2H Pro
4.3(2,169)$69.99
CamerasAqaraCamera Hub G3
4.2(1,042)18% OFF$119.99$98.99
CamerasAqaraCamera Hub G350
4.3(215)$139.99
CamerasAqaraCamera Hub G5 Pro PoE
4.5(301)13% OFF$229.99$199.99
CamerasAqaraCamera Hub G5 Pro WiFi
4.2(288)$199.99
DoorbellsAqaraDoorbell Camera G400 (Wired)
4.3(386)$99.99
DoorbellsAqaraDoorbell Camera Hub G410
3.9(1,445)8% OFF$144.99$133.99
DoorbellsAqaraSmart Video Doorbell G4
3.6(3,341)6% OFF$79.99$74.99
Door LocksAqaraSmart Lock D200i
3.3(7)
Door LocksAqaraSmart Lock N100 Zigbee Edition
$159.90
Door LocksAqaraSmart Lock U100
4.1(2,555)$149.99
Door LocksAqaraSmart Lock U200
2.7(2,086)$169.99
Door LocksAqaraSmart Lock U300
3.6(366)$189.99
Door LocksAqaraSmart Lock U400
4.1(392)$269.99
Door LocksAqaraSmart Lock U50
4.0(667)$119.99
Door & Window SensorsAqaraDoor and Window Sensor P2
3.6(1,115)7% OFF$29.99$27.99
Door & Window SensorsAqaraDoor and Window Sensor
4.4(6,093)$17.99
Door & Window SensorsHeimanWindow Door Alarm
4.0(148)$19.98
Gas DetectorsHeimanHS1CG Series Combustible Gas Sensor
Gas DetectorsHeimanWS2CG Series Combustible Gas Detector
Motion SensorsHeimanSmart Motion Sensor
3.2(32)$23.99
Motion SensorsHeimanWiFi Smart Motion Sensor
2.8(43)$12.98
SirensHeimanSmart Siren HS2WD series
$79.99- Smoke & CO DetectorsHeiman
HS1SA Series Smoke Alarm
4.5(5,145)5% OFF£16.99£16.14 - Smoke & CO DetectorsHeiman
Interconnected CO Alarm C1-R
4.0(24)10% OFF$29.98$26.99 - Smoke & CO DetectorsHeiman
Interconnected Smoke Alarm S1-R
4.2(204)$25.99 - Smoke & CO DetectorsHeiman
Matter Smoke Detector S1-M
3.6(77)$39.99 - Smoke & CO DetectorsHeiman
Matter Smoke Detector S1-TM
5.0(4)$49.98 - Smoke & CO DetectorsHeiman
Smart CO Alarm
3.7(21)20% OFF$59.99$47.99 
Vibration SensorsHeimanSmart Vibration Sensor HS1VS series
$14.90
Water Leak SensorsHeimanSmart Water Leakage Sensor
4.2(40)20% OFF$19.99$15.99