Winner
Updated September 2026
Data from Amazon and official Kidde site.
2026 verdict
Kidde Smart Smoke & CO Detector with Ring wins the 2026 matchup against Kidde Smart Smoke + Indoor Air Quality Alarm, mainly on price, rating, and connectivity.
What pushes it ahead is price, rating, and connectivity, and steam check keeps the advantage from looking narrow. Pick Kidde Smart Smoke + Indoor Air Quality Alarm only when integrations, sensors, and Built-in light are the deciding factor for your setup. That is why the final call still favors Kidde Smart Smoke & CO Detector with Ring.
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.
| Feature | Kidde Smart Smoke & CO Detector with Ring | Kidde Smart Smoke + Indoor Air Quality Alarm | Winner |
|---|---|---|---|
| Price | $69.97 | $104.86 | Kidde Smart Smoke & CO Detector with Ring |
| Rating | 4.3 | 3.3 | Kidde Smart Smoke & CO Detector with Ring |
| Connectivity | 2.4 GHz WiFi, Other | 2.4 GHz WiFi | Kidde Smart Smoke & CO Detector with Ring |
| Integrations | Alexa, Home Assistant | Google Home, Alexa, Home Assistant | Kidde Smart Smoke + Indoor Air Quality Alarm |
| Sensors | Smoke, CO | Smoke, Humidity, Air Quality | Kidde Smart Smoke + Indoor Air Quality Alarm |
| Built-in Light | NO | YES | Kidde Smart Smoke + Indoor Air Quality Alarm |
| Steam Check | YES | NO | Kidde Smart Smoke & CO Detector with Ring |
| Screen | NO | NO | Tie |
| Alerts | Fire Alerts, CO Alerts, Low Battery Alerts | Fire Alerts, Low Battery Alerts, Air Quality Alerts | Tie |
| Built-in Siren | YES | YES | Tie |
| Tests Itself | NO | NO | Tie |
| Pathlight | NO | NO | Tie |
Winner
- + Price: $69.97
- + Rating: 4.3
- + Connectivity: 2.4 GHz WiFi, Other
- - Integrations: Alexa, Home Assistant vs Google Home, Alexa, Home Assistant
- - Sensors: Smoke, CO vs Smoke, Humidity, Air Quality
$104.86
- + Integrations: Google Home, Alexa, Home Assistant
- + Sensors: Smoke, Humidity, Air Quality
- + Built-in Light: YES
- - Price: $104.86 vs $69.97
- - Rating: 3.3 vs 4.3
Frequently Asked Questions
Which is better overall: Kidde Smart Smoke & CO Detector with Ring or Kidde Smart Smoke + Indoor Air Quality Alarm?
Kidde Smart Smoke & CO Detector with Ring has the stronger overall profile in this comparison, especially for price, rating, and connectivity.
What is the biggest difference between Kidde Smart Smoke & CO Detector with Ring and Kidde Smart Smoke + Indoor Air Quality Alarm?
Price is one of the clearest differences: Kidde Smart Smoke & CO Detector with Ring lists $69.97, while Kidde Smart Smoke + Indoor Air Quality Alarm lists $104.86.
Which one looks better on price?
Kidde Smart Smoke & CO Detector with Ring is listed at $69.97, while Kidde Smart Smoke + Indoor Air Quality Alarm is listed at $104.86. Kidde Smart Smoke & CO Detector with Ring (better spec).
Who should buy Kidde Smart Smoke & CO Detector with Ring?
Choose Kidde Smart Smoke & CO Detector with Ring if your priority is price and rating and that matters more than integrations.
Who should buy Kidde Smart Smoke + Indoor Air Quality Alarm?
Choose Kidde Smart Smoke + Indoor Air Quality Alarm if your priority is integrations and sensors and that matters more than price.
Full comparison table
Compare all 21 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.
- 21 Smoke & CO Detectors
- 44 specs compared
- 41 filters
YoLinkPhotoelectric Smoke Alarm
$49.99
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)
$400.00
GoogleNest Protect (Wired)
$449.99
ShellySmoke Alarm
25% OFF€53.43€39.95
X-SenseXC0M-iR Smart Carbon Monoxide Alarm with Voice Alerts
AqaraSmart Smoke Detector
16% OFF€44.99€37.99- Kidde
Smart Smoke & CO Detector with Ring
$69.97 
First AlertSC5 Battery Smart Smoke & CO Alarm
C$169.99
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
$104.86
First AlertSC5 Hardwire Smart Smoke & CO Alarm
C$169.99
KiddeSmart Smoke Alarm (P4010ACS-WF)
$40.79
X-SenseSD19-MN Interconnected Smart Smoke Alarm
33% OFF$32.99$21.99
- Smoke & CO DetectorsKidde
Smart Smoke Alarm (P4010ACS-WF)
3.2(317)$40.79 - Smoke & CO DetectorsKidde
Smart Smoke & CO Detector with Ring
4.3(434)$69.97 - Smoke & CO DetectorsKidde
Smart Smoke + Indoor Air Quality Alarm
3.3(198)$104.86 
Water Leak SensorsKiddeWiFi Water Leak & Freeze Detector
3.9(738)51% OFF$34.97$17.14