Yep, the First Alert Onelink Safe & Sound does have a nightlight feature.

The manufacturer mentions that it's Apple HomeKit compatible, so you can use Siri and the Apple Home app to control it.

This means you can not only check the status of the smoke and carbon monoxide detectors, but also tweak the nightlight settings to fit your routine.

So, about the sound quality on the First Alert Onelink Safe & Sound—it's pretty solid!

Besides being a smoke and carbon monoxide detector, it's also a surprisingly good speaker. From what we've gathered, folks are really happy with its clear and robust audio.

It's more than just a safety device; you can definitely enjoy your music and podcasts on it too. The sound is nicely balanced, with crisp highs and warm lows that fill the room well.

And for Apple users, it supports AirPlay 2, so you can stream directly from your iPhone or iPad easily.

One thing to be aware of: it does have some limitations with Alexa.

You can't use it in Alexa's multi-room music groups, which means you can't sync playback with other Echo devices. This has been a bit of a bummer for some people who wanted to integrate it into a broader Alexa setup.

All in all, if you're looking for a smoke and CO detector that can also play some quality tunes, the Onelink Safe & Sound is a great pick.

Just keep the Alexa multi-room limitation in mind if that's something you wanted.

Yep, you can definitely use the First Alert Onelink Safe & Sound as part of a whole-home audio system. It works with Amazon Alexa, so you can control it using voice commands to play music, control smart home devices, get news updates, and more. The built-in microphones are pretty good at picking up your voice even when there's music playing, so voice commands should work smoothly according to our research.

The manufacturer says that Alexa Voice Services are built-in, which means you can manage things like playing music, adjusting lights, and setting IFTTT alerts just by talking to it. You can set everything up through the Onelink Home app, which helps connect the device to your Wi-Fi and Alexa.

However, if you're thinking about using it for more complex multi-room audio setups, there might be some hiccups. Our research found that while basic Alexa functions work well, integrating it into multi-room music groups can be a bit unpredictable.

So, in a nutshell, the First Alert Onelink Safe & Sound is pretty solid for basic audio and smart home control. Just keep in mind that some advanced features might not be perfect yet.

For the best experience, follow the installation steps in the Onelink Home app and keep the device's firmware updated for any improvements or fixes.