Customer Ratings & Reviews

After my old nest smoke detectors hit the expiration date, I was looking at alternatives and Google announced these ones as the official partnership replacements. They were easy to install (went from battery to hardwired to save on batteries and was surprised to see they come with a rechargeable battery already, which save me the need to buy extra batteries) and cannot complain. Setup was a little bit cumbersome involving the vendor app plus the Google home one, but nothing major. The only thing I miss is the light functionality from the old smoke detectors, those were quite a bit life savers when walking during the night, but other than that, seem solid.

Easy to install as it has adapter wires for previous nest and the existing holder works with the new detector. I wish though it would light up at night like the old detector

Decent product to replace Nest that Google sadly discontinued. Easy to install as replacement with included conversion kit. Only negative - is no night light built in. Sadly nobody seems to do this though, now that Nest is essentially gone.

It's not a Nest but it seems to work well so far. I do wish it had the nightlight feature.

So far so good! We were unsure of how transitioning from a Nest device to a First Alert Smoke and Carbono Monoxide Detector would work, and we are satisfied with the instructions, the compatibility with the previous installation, and with adding it to our app for management.

At least Google sold First Alert the NEST specs & design help to make the SC5 detector the advertised go-to Nest Detect wired Replacement. Changing our expiring Nest Detect units for the First Alert was easy, with just a wire harness adapter to plug in to the old Nest plug and the new unit attaches to the NEST ceiling mount. The First Alert app looks under capitalized, and leaves a lot to be desired, but it works. Google Home app sees the First Alert SC5 units. No motion light on this first model, but hopefully they will figure out how useful and simple that NEST feature was to NEST customers and add it to future models.

This was purchased to replace an expired and now non-available google nest detector. It was almost plug and play as all power adapters are included. No need to call an electrician. Plug the new adapter into the old plu and you re ready to go. Even the connecting ring doe not have to be change. I had no issues with bluetooth connectivity.

Overly sensitive to steam, don’t put near a bathroom. Otherwise it’s a nice alarm that’s easy to install, app is straight forward.

I replaced three Nest smoke alarms with these all ready and they work great and used the same bracket as the Nest alarms. Very easy to use the new Resideo app that First Alert uses.

Purchased bc one of my nest detectors malfunctioned and needed to be replaced so purchased first alert for compatibility with my other nest detectors. So far its been great, it was super easy to install (works with nest wall mount that was already installed) & set up. One functionality i miss is that the nest use to light up when motion was detected, i wish the FA had the same function.

Very easy to set up. Works like they say it supposed to. I will replace the other one also with the same one.

I was quite impressed with the ease of replacement with my expiring Nest Protects. It was literally plug and play. The First Alert app is intuitive and has a great guided setup as well. I am also pleased how well the devices integrate into the Google Home app. The only knock on this device is the lack of a path light. Mine is located in my hallway and I miss having it light up when I walked by. Other than that, I've had it up for almost two months without any issues.

Quality device and works with Google Home. Easy to add, although you have to add one more app to your phone. Wish it had a spotlight like the Nest App. And be careful to make sure you get the wired or the battery option depending on your need.

Packaging was easy to open. Easy to install and replace my existing detector. Instructions and connections to WiFi and the first alert app worked first time. I like seeing check in status in the app

I bought this to replace my old detectors that had expired, and the process couldn't have been easier. Since my home was already hardwired for First Alert/BRK units, this was a simple plug-and-play swap. The wiring harness fit perfectly, so I didn't have to call an electrician or mess with wire nuts. I love that it covers both smoke and carbon monoxide in one unit, which cuts down on the clutter on my ceilings. The side battery drawer is a huge plus—changing the backup battery is a breeze without having to take the whole unit down. Highly recommended for a quick and safe upgrade.

Easy set up through the First Alert app. Love the fact that you can silence alarm and check the status on your phone. No more waking up in the middle of the night with the annoying chirping when batteries are low.

I’m very happy with this First Alert hardwired smoke and carbon monoxide detector. Installation was straightforward and the instructions were clear and easy to follow, which made the setup process quick and stress-free. The companion app is a great addition. It makes monitoring the detector simple and provides peace of mind by allowing you to check status and receive alerts directly on your phone. As an added bonus, it integrates smoothly with Google Home, which fits perfectly into my existing smart home setup. Overall, this is a reliable, well-designed detector that combines safety, convenience, and smart features. I would definitely recommend it to anyone looking to upgrade their home safety system.

Bought as a replacement for nest protect. Install is fairly simple. However, it is not as feature packed as the nest. May also be a little too pricey but if you are looking to stay with the nest ecosystem, then this is likely your best option

Very easy to install and fully compatible with the NEST device I had.

Replaced my Nest Protect with a First Alert and it works great, I didn't know that these devices expires in 10yrs and Nest Protect were discontinue. These work seamlessly on the Nest and Home app but it has its own app.