Great long-term safety and fewer false alarms, but no smart features or replaceable battery

The 10-year sealed battery is a huge plus—no more middle-of-the-night chirping or yearly battery changes, and the combined smoke/CO design means one device instead of two. I also appreciate the advanced sensing that cuts down on nuisance alarms from normal cooking and the clear LED indicators that make it easy to see if everything’s working at a glance. On the downside, the sealed battery means you have to replace the whole unit at end-of-life, and there’s no smart-home integration or mobile alerts, which some people might expect at this price. I’d still recommend it for homeowners or renters who want a simple, reliable, low-maintenance alarm without the complexity of Wi‑Fi or apps.

Set It and Forget It Safety for the Next Decade

I bought this to replace an old chirping smoke detector and really liked that the battery is built to last 10 years. The LED lights make it easy to tell at a glance if everything’s okay, and the test button is simple to use for a quick weekly check. So far it hasn’t gone off from regular cooking, which is a big improvement over my last alarm.

Set-It-and-Forget-It Alarm With No More 3 A.M. Chirping

I got this to replace two separate smoke and CO alarms and immediately liked that it runs on a sealed 10-year battery, so no more middle-of-the-night low-battery beeps. Installation was straightforward, and I really appreciate the clear LED lights—green when it’s fine, amber if there’s an issue, and red for an actual alert. It hasn’t gone off from normal cooking yet, which makes me trust it more when it does decide to make that loud 85 dB alarm sound.