HEAD-TO-HEAD COMPARISON
First Alert Onelink vs Kidde Smart Detect
We compare the First Alert Onelink and Kidde Smart Detect head-to-head on performance, features, value, and more. Here's which one wins.
Best Apple
First Alert Onelink
HomeKit with voice alerts and 10-year battery
Overall:8.8/10
Check price on Amazon Best Value
Kidde Smart Detect
WiFi with smartphone alerts under $40
Overall:8.8/10
Check price on Amazon Score Breakdown
| First Alert Onelink | Category | Kidde Smart Detect |
|---|---|---|
| 9.6/10 ✓ | Performance | 8.8/10 |
| 9.4/10 ✓ | Features | 9.2/10 |
| 9.1/10 ✓ | Ease of Use | 8.7/10 |
| 9.3/10 ✓ | Value | 8.4/10 |
| 8.8/10 | Overall | 8.8/10 |
Specs Comparison
| First Alert Onelink | Spec | Kidde Smart Detect |
|---|---|---|
| See Amazon for full specs | Details | See Amazon for full specs |
First Alert Onelink
Pros
- + Automations work flawlessly
- + Works with Alexa Google HomeKit
- + Responsive intuitive app
Cons
- − Learning curve for advanced features
Kidde Smart Detect
Pros
- + Low power consumption
- + Strong privacy controls
- + Responsive intuitive app
Cons
- − Limited color options
Read the full Best Smart Smoke and CO Detectors 2026 guide for complete reviews of all 4 products.
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