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“The Onelink Safe & Sound is a smoke detector, CO detector, and Alexa speaker in one — the 85 dB alarm is the loudest we've tested”
The First Alert Onelink Safe and Sound ($249-$279) is recommended with a 8.2/10 consensus score across 9 expert reviews. Experts highlight 85 db alarm audible from 3 rooms away and built-in alexa speaker — doubles as smart speaker. CNET says: "The Onelink Safe & Sound is a smoke detector, CO detector, and Alexa speaker in ..." Best for: Large homes, Multi-story layouts, Alexa households.
Recommended9 Expert Reviews
Price Range$249-$279
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First Alert Onelink Safe and Sound
Sensors
Consensus Score — 9 experts
8.2/10
Updated 2 weeks ago
“The Onelink Safe & Sound is a smoke detector, CO detector, and Alexa speaker in one — the 85 dB alarm is the loudest we've tested”
Key Features
- ✓ 85 dB alarm
- ✓ Built-in Alexa
- ✓ Mesh networking
- ✓ Emergency lighting
Best For
Large homesMulti-story layoutsAlexa households
What Experts Agree On
What Experts Love
- ✓ 85 dB alarm audible from 3 rooms away
- ✓ Built-in Alexa speaker — doubles as smart speaker
- ✓ Mesh networking works during WiFi failures
- ✓ Philips Hue emergency lighting integration
- ✓ AC-wired with battery backup
Common Criticisms
- ✗ Most expensive smart detector at $249
- ✗ Larger than standard detectors
- ✗ AC wiring required — not renter-friendly
What The Experts Say
Affiliate disclosure: SmartHomeExplorer.com participates in the Amazon Associates program. We earn a commission from qualifying purchases at no extra cost to you. This consensus review is based on 9 independent expert reviews — we did not test this product ourselves. Always verify current prices and availability before purchasing.