First Alert Onelink Safe & Sound
By Ethan Halfhide · Updated
Smart smoke and CO detector with built-in Alexa speaker
First Alert Onelink Safe & Sound
Specifications
- Price
- $99.99
- Device type
- Smart Smoke & CO Detector
- Ecosystems
- Alexa, HomeKit
- Rooms
- bedroom, living-room, hallway
- Connectivity
- wifi
- Hub required
- No
- Rental friendly
- Yes
- Matter certified
- No
- Installation
- DIY
- Energy Star
- No
- Local control
- Yes
- Voice control
- Yes
About
The First Alert Onelink Safe & Sound combines a UL-listed combination smoke and carbon monoxide detector with a full-range speaker and built-in Amazon Alexa. It connects to the Onelink Home app for real-time alerts, self-tests, and location-specific alarms so you know exactly where danger is. Installation is ceiling-mount and it works as a smart home hub, playing music and controlling other devices via voice.
Pros
- +Dual smoke + CO detection (UL listed)
- +Built-in Alexa smart speaker
- +Real-time push notifications with room location
- +Works with Apple HomeKit
- +No monthly fees
Cons
- −Requires wiring (hardwired installation)
- −More expensive than basic detectors
- −No Google Home support
About the author
Ethan Halfhide: Ethan Halfhide is a smart home enthusiast and AI technologist who follows the connected home market closely, from smart locks and security cameras to robot vacuums, lighting, sensors and hubs. He curates HomeGearLab's device directory, comparing products on published specs, compatibility, setup requirements and price so readers can pick gear that fits their home and works together.