Customer Ratings & Reviews

Bought 3 of these to replace a very old smoke detectors that were built-in to our very old alarm system. Very easy to install & set-up (already had a Nest account). So far they are great. I like how they are both smoke & carbon monoxide detectors. I like how they are motion sensitive & can work as night lights. But best of all I like how they all work together & are connected to your smart phone app. Totally worth the price for feeling safe.

This smoke detector is modern, sleek, practical, and integrates quite seamlessly within our ecosystem of Nest home products. Only gripe is the price. $150 for a smoke/CO detector is quite hefty but the key feature to appreciate is to be alerted on my smartphone in the situation where I am not home. You won’t get that functionality with a regular standard smoke detector.

Nest Protect Smart Smoke/Carbon Monoxide Alarm provides the ultimate protection & peace of mind. The intelligent alerts discriminate between steam and smoke. A clear "Heads Up!" pre-alert gently cautions you in situations when close proximity to steam or a little smoke in the kitchen, for example, is about to trigger an alert. You can silence a false alarm using your phone. Multiple units share alerts to all rooms & to your NEST App on your phone, tablet & computer - so you are protected throughout your home! The "Promise" is a ring of green light that illuminates nightly to let you know everything is good. Walk under NEST at night & the ring glows white, forming a pathlight. During Heads Up, it glows yellow. During an emergency, it glows red. NEST Protect self-tests, alerting you first by the phone app that it will sound. Everything is tested: sensors / voice / siren. Tests are dated & are sent to your app. A monthly summary even shows the exact date & time of each test. This is the premiere smoke detector, able to detect CO2 (even produces a completely different sound, for instant identification). NEST Protect senses both fast and slow burning fires. NO CHIRPS!! This advanced Smoke Alarm eliminates all of the hassles of pesky chirps from low batteries, with super long lasting Lithium Batteries included that last years. Battery alerts are through your App & by voice on the Alarm. To set-up, simply scan the QR Code on the back of the NEST & follow the voice instructions. Easiest set-up ever! NEST Protect earns my highest recommendation - no other Smoke / CO2 Alarm even comes close!

I lost two birds for Carbon monoxide and smoke buildup at home during winter months . Sensitive product , several times it proved its efficiency. Very easy to install and operate . Happy to have this item at home .

Works great! Easy setup! Test mode is nice! Comes with a night light but doesn’t have much use because you gotta install 12 inches from ceiling to work right.

Bought 4 of these almost 2 years ago and they have worked great and the nest app works very well

Very easy to setup. Has worked well so far. We really like the night light feature for the path lighting.

Out of the box, quite easy to set up. The various lights let me know that the unit is still working. The night light is a great addition - I didn't even know I needed it.

I love these things! They work flawlessly. The smoke detector is very accurate and I assume the CO2 part works great too (I hope I will never need to find out). The best feature for us is the motion sensing night light. It's not super bright, but just enough to light the stairway. They are very easy to figure out what is going on as well. Side note: I did a lot of research on how the CO2 part works from the celing. Apparently the Nest detector has some kind of high powered sensor and scanning sensor build in. It Apparently works well based on tests I read online.

Definitely pleased with purchase, will be adding more units to this system. Worth the Money to me personally for your peace of mind for the security of your family, pets, property, etc. on a 10 yr. investment it comes out to less than .85 cents a month. This unit is well built, Smoke and Carbon Monoxide, and it works well with the app so far.

I'm a big NEST customer. This smoke/carbon monoxide detector is a top notch item. Read the specifications it's all true. Works from phone thru NEST app. Speaks to you before actual loud beep. I can go on. Won't be disappointed.

I love this sensor. It gives me a great peace of mind to know that I will be alerted if there is a problem when I'm not at home. We have now purchased several over time, and they connect to each other well. They don't give as many false alarms as my old detectors - in fact my cooking has only set them off once. They then gave me updates about how smokey it was, ha ha! I plan to continue to add more to my home until all the spaces are fully covered. Highly recommend.

Nest Protect is one of the most comprehensive, of the smart smoke detectors I've ever purchased. Not only does it pick up several types of fires, as well as carbon monoxide, but it also does the best job at alerting you of the danger. It also works with a wide range of smart-home products. I've set my Philips Hue lights to turn on automatically when the Nest Protect goes off. Pretty cool!

Purchased multiple units. Easy setup with link to iPhones and each other. When smoke in Kitchen while cooking all alarms went off “emergency smoke in kitchen” etc and immediate notification on iPhones.

This is my favorite smoke detector thus far I had a issue to were my normal one would go off every-time I would open my front door since switching to this on I haven’t had any issues

Previous to my purchase, I had installed two of these units about five years ago. Given all the software updates to Google home, Nest, etc since then you can come to worry that adding or integrating a new unit to an existing system may cause issues... Completely unwarranted on my part. New unit (on first floor) was installed 3 days prior to its first alert and unit in the attic notified me where the smoke was detected. That's the advantage of a system like this. Simplicity, reliability and easily actionable, informative alerts.

I bought one of these last year and recently bought two more. I love the peace of mind to be able to check the status when I'm not home. Every so often, the alarms will auto test and my phone lets me know a few minutes prior. The alarms also sense light and when you turn off the lights, the ring will light up for a second to let you know it's working properly. It's reassuring seeing that light every night before going to sleep. I highly recommend these alarms.

This is my 2nd one in 5 years. I like that it send me alerts to my phone fast. Batteries last about a year.

If you have any Google Nest stuff, I highly suggest replacing your smoke alarms with this. Not only does it detect smoke and carbon monoxide, it also detects noises such as glass breaking (it fully integrates with Nest Protect). My favorite feature, however, is the light because it detects motion and it works as a perfect hallway night light brightening automatically when you walk under it.

I’m so happy that I have this in my home. Piece of mind. So easy to set up.