description First Alert Onelink Safe & Sound Overview
The First Alert Onelink Safe & Sound combines smoke and carbon monoxide detection with a built-in Alexa speaker. Its advanced photoelectric sensor minimizes false alarms from cooking or steam, and the hush button silences alarms temporarily. The integrated Alexa allows for voice control and announcements during emergencies. It connects to the Onelink app for remote monitoring and notifications.
The speaker's presence also contributes to a less jarring alarm sound compared to traditional piercing sirens, making it ideal for families and those sensitive to loud noises. It's priced around $150.
info First Alert Onelink Safe & Sound Specifications
| Weight | 1.5 pounds |
| Dimensions | 5.67 x 5.67 x 2.26 inches |
| Sensor Type | Photoelectric for smoke detection, electrochemical for carbon monoxide |
| Connectivity | WiFi 802.11 b/g/n (2.4 GHz), Bluetooth 4.0 |
| Power Source | Hardwired 120V with 10-year battery backup |
| Color Options | White (matte finish) |
| Certifications | UL 217, UL 2034, ETL listed |
| Alarm Sound Level | 85+ decibels |
| Smart Home Compatibility | Amazon Alexa, Apple HomeKit |
| Temperature Operating Range | 40°F to 100°F |
balance First Alert Onelink Safe & Sound Pros & Cons
- Advanced photoelectric sensor significantly reduces false alarms from cooking smoke and steam
- Built-in Alexa speaker provides hands-free voice control and smart home announcements
- Dual-function detection monitors for both smoke and carbon monoxide threats
- OneLink app enables remote monitoring and smartphone alerts
- Hardwire installation ensures reliable continuous power with battery backup
- Voice announcements can specify the type and location of danger
- Requires professional hardwire installation, limiting placement flexibility
- Alexa integration limits compatibility primarily to Amazon smart home ecosystem
- Larger physical footprint compared to standard smoke detectors
- Higher price point than purchasing separate smoke detector and smart speaker
- Voice assistant features may be unnecessary for users seeking basic safety detection only
help First Alert Onelink Safe & Sound FAQ
Does the First Alert Onelink Safe & Sound work with Apple HomeKit or Google Assistant?
The Onelink Safe & Sound is designed primarily for Alexa integration. It does support Apple HomeKit for basic remote monitoring and notifications, but does not natively support Google Assistant or Google Home ecosystems.
How loud is the alarm on the Onelink Safe & Sound?
The smoke and carbon monoxide alarm produces a loud 85+ decibel alert sound to ensure it can be heard throughout the home, meeting UL safety standards for residential smoke alarm sound levels.
Does this device require professional installation?
While experienced DIYers can install it, the device requires hardwiring into existing 120V home electrical wiring with a standard interconnection cable. Professional installation is recommended for most homeowners to ensure proper setup and compliance with local safety codes.
Can I silence false alarms remotely without climbing to the device?
Yes, the Onelink app allows you to silence the alarm remotely when a false alarm is triggered, and the device also features a physical hush button on the unit itself for temporary silencing.
What happens to the Alexa functionality if the power goes out?
The device includes a battery backup that keeps the smoke and CO detection active during power outages, though the Alexa speaker and smart features require main power to function.
What is First Alert Onelink Safe & Sound?
How good is First Alert Onelink Safe & Sound?
What are the best alternatives to First Alert Onelink Safe & Sound?
What is First Alert Onelink Safe & Sound best for?
Homeowners with Alexa-based smart homes who want comprehensive smoke and carbon monoxide protection with integrated voice assistant functionality.
How does First Alert Onelink Safe & Sound compare to Google Nest Protect (2nd Gen)?
Is First Alert Onelink Safe & Sound worth it in 2026?
What are the key specifications of First Alert Onelink Safe & Sound?
- Weight: 1.5 pounds
- Dimensions: 5.67 x 5.67 x 2.26 inches
- Sensor type: Photoelectric for smoke detection, electrochemical for carbon monoxide
- Connectivity: WiFi 802.11 b/g/n (2.4 GHz), Bluetooth 4.0
- Power source: Hardwired 120V with 10-year battery backup
- Color options: White (matte finish)
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