First Alert Onelink Smoke + CO Alarm

Since this is a hardwired unit, it connects directly to your home's electrical wiring. While many homeowners with basic electrical knowledge can install it themselves, we recommend consulting a professional if you are uncomfortable working with household wiring.

An open-box item means the original packaging has been opened, but the product itself is in new, unused condition. Each unit is inspected to ensure it is fully functional and meets all safety standards before being listed.

Yes. The smoke and carbon monoxide detection features work independently of your Wi-Fi connection. The alarm will sound locally in your home even if your internet is offline, though you will not receive remote notifications on your phone until the connection is restored.

Instead of just a standard siren, this detector uses voice prompts to clearly announce the specific danger, such as 'Fire' or 'Carbon Monoxide.' This helps eliminate confusion during an emergency so you can react quickly.

This model is specifically designed to integrate with the Onelink smart home ecosystem. Please verify that your current smart home setup is compatible with the Onelink protocol to ensure seamless connectivity.

It is recommended to test your alarm at least once a month using the integrated test button. This ensures the sensors, internal circuitry, and alarm sounder are all operating correctly.