Best HomeKit smoke and CO detectors 2022

The OneLink Safe and Sound is a unique combination of a smoke and carbon monoxide detector, AirPlay 2 speaker, and voice assistant with Alexa built right in. This hybrid accessory connects to your existing wiring, and its interconnect feature extends smart notification coverage to all of your smoke detectors.

This detector from First Alert brings portability to the traditional safety monitoring form factor. This monitor runs solely on batteries for up to five years, allowing placement almost anywhere in your home without the need to worry about having existing wiring.

Like its battery-powered counterpart, the OneLink Hardwired Smoke and Carbon Monoxide Detector brings smarts with a classic design. In case of emergency, this OneLink detector can send notifications directly through HomeKit, and a built-in 10-year backup battery provides peace of mind even when the power goes out.

This smart solution from Bosch offers affordable smoke detection that installs in seconds thanks to a peel-and-stick design. There are a few downsides, though, as it is only available in Europe, and it requires a Bosch Smart Home Controller for HomeKit integration.

Another European-only option is the Netatmo Smart Smoke Alarm which works right out of the box with HomeKit. In addition to Bluetooth, Netatmo's detector supports Wi-Fi enabling timely notifications, and an 85-decibel siren ensures that everyone in the home is aware of all of the action at all times.

Bosch's other European-only HomeKit smoke detector takes things up a notch by mixing in additional sensors for air quality, temperature, and humidity. With the Bosch app, you can view air quality trends and more, and of course, with HomeKit, you can create automation with other smart home accessories.