Nest Protect Smoke + Carbon Monoxide Alarm (Battery)-S2001BW - The Home Depot


Model # S2001BW

Internet # 205366383

Store SKU # 1000385189

Protect Smoke + Carbon Monoxide Alarm (Battery)

Nest Protect Smoke + Carbon Monoxide Alarm (Battery)

This item has been discontinued.
The Home Depot no longer carries this specific product.

$99.00 / each
  • Unit speaks up to tell you if there’s smoke or CO
  • Conect unit to Wi-Fi to get phone alerts when alarm goes off
  • Works with the Wink home automation network


Model # S2001BW

Internet # 205366383

Store SKU # 1000385189

Know more, worry less. Nest Protect speaks up to tell you what the problem is and where it is. It will even message your phone when the alarm goes off. And you can check on things at any time with the Nest app. Nest Protect can also see the carbon monoxide you can’t. Or if there’s only a little smoke from just burning the toast, it gives you a friendly Heads-Up. It also gives you peace of mind by testing itself constantly and showing you everything’s working with a quick green glow when you turn off the lights. Sweet dreams.

  • Know from anywhere - Connect Nest Protect to Wi-Fi and it will send a message to your phone if the alarm goes off or the batteries run low
  • Tells you what and where - It speaks up to tell you if there’s smoke or CO and tells you where the problem is so you know what to do
  • Nest Protect sees the CO you can’t - Carbon monoxide is odorless, invisible and deadly, When there’s CO, Nest Protect tells you where it’s hiding
  • Nightly Promise - Nest Protect tests its sensors constantly and lets you know they’re working with a quick green glow at night
  • Silence the chirp - Low-battery chirps ever rattle your dreams? Nest Protect shows you its batteries are good. Before you doze off

  • This item is compatible with the Wink home automation system and can connect to several other items to control and customize your home with automated rules, shortcuts, & more, all with no monthly fees

Info & Guides

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Assembled Depth (in.)  1.63 in  Assembled Height (in.)  5.28 in 
Assembled Width (in.)  5.28 in 
Alarm Sensor Type  Photoelectric  Alarm Type  Carbon Monoxide,Heat,Smoke 
Alarm/Detector Features  Battery Back-Up,Escape Light,Hush Feature,Interconnected,Voice Alert,Wi-Fi Enabled  Commercial / Residential  Commercial / Residential 
Connected Home Protocol  Wi-Fi  Connector/Contact Type  None 
Electrical Product Type  Combination Detector  Hazardous Code  No Air 
Included  Batteries  Power Source  Battery 
Returnable  90-Day  Smart Device Enabled  Enabled 
Voltage (volts) 
Warranty / Certifications
Certifications and Listings  4-UL Certified 


Rated 4.8 out of 5 by 20 reviewers.
Rated 5 out of 5 by Super Sylish NEST Protect Detector. Perfect addition to the NEST Thermostat. Today I installed my new NEST Protect Smoke and Carbon Monoxide Detector. I already have the NEST Thermostat, which has been an awesome addition to my home. Upon opening it from the box, I noticed that it has been built and designed with the highest skill and attention to detail. It came with a fully charged battery, 4 mounting screws, the wall/ceiling plate, and detector. I was able to install it in less than 10 minutes. Once installed, I synced it to my home wireless network and it appeared in my NEST app on my iPhone. It has an awesome setting for night time. If you walk under it, it will illuminate your path. Please check out my video that I made. It is the testing and setup stage. I would like to add a few more of these to my home. They are super advanced and will even contact the fire or police in the event of an emergency. August 26, 2014
Rated 5 out of 5 by Ready, in the kitchen! The Nest protect is installed in my kitchen near the gas stove. I found the installation extremely easy. The four mounting screws are cleverly screwed into the box. Once the mounting bracket it installed, remove the strip to connect the included batteries and attach to the mount. The Nest used my iPhone to complete the setup process and connect to the internet. One tap of the button and Nest will announce, "Ready, in the kitchen. Press to test." One more tap to initiate a full test, or two taps to cancel. The Net protect was triggered one time by accident (bacon grease mess) and I received a push notification immediately to my iPhone. In addition, the Nest protect alerted me first that it sensed smoke in plain english before proceeding to beep. A quick tap of the button silenced the alarm. I am impressed! This product gives a level of comfort knowing that if something like a fire or CO2 incident is occurring you will be the first to know, wherever you are. November 17, 2014
Rated 5 out of 5 by Works Exactly As Advertised I��ve had my Nest thermostat for about a year and a half, and I love it, so I was excited to add Nest Protect once it was relaunched. As has come to be expected from Nest, set up was simple and straightforward, and Nest Protect elegantly interfaced with the Nest app. Setup took about 10 minutes in total. After that, Nest Protect shows up in your Nest app and connects to any other Nest devices in the house. Now, having recently watched as firefighters tried to salvage a house a few doors down from mine as flames shot through the roof after it caught on fire while no one was home, what I was most interested in with this product was how quickly it would alert me to a potential house fire in my absence. So, after having two Nest Protects (one battery and one wired) up and running for a couple weeks, I intentionally created smoke directly underneath the battery-operated unit in my den. As advertised, it first turned yellow as a warning, then began to sound the alarm. Within a few seconds, my wired unit upstairs was also sounding & specifying that there was smoke in the den, and in less than a minute, I received notification on my phone that there was smoke in the den. In my opinion, it doesn’t get any better than that unless you want to shell out money for a monitored home security system. So, if you’re debating this product, buy it. For the peace of mind it will bring, it’s well worth the price. September 3, 2014
Rated 4 out of 5 by Great alarm, but I have privacy concerns The Nest Protect has great features and good performance. It offers peace of mind for everyone like me that sometimes has random worries when away from home, "Wait, did I leave the stove on and is my house currently burning down?" However, I do have some reservations concerning data privacy. The smoke and CO detector comes packaged in a stylish box that reminds me of the way certain tech companies package their flagship smartphones. The documentation manual and packaging graphics are very polished, and give the feel of an expensive electronic device (which I suppose that's exactly what the Protect is anyway). Nest put a lot of work into initial presentation, making this detector feel sleek and sophisticated. Setup couldn't be any easier. Download the Nest app, scan the QR code on the back of the Nest Protect, and type in your WIFI password. The app and the device to the rest for you. Just hit the button when prompted and enter the location the detector will be installed at. Installing the smoke/CO detector on the ceiling was just as easy. The included drywall anchors are the type that have a flared out "corkscrew" thread that grabs more surface area. Unlike most products I've dealt with that include poor quality drywall anchors, I actually used the better quality ones included with the Nest Protect rather than throwing them out and using my own. It took me 5 minutes tops, including dragging the ladder inside and setting it up. After I had everything set up, I performed the automatic alarm test by pressing the Nest button twice. The voice feature is a great addition to the standard alarm feature of regular smoke/CO detectors. The Nest Protect has two distinct, very LOUD alarm patterns: one for smoke with a longer tone, and one for CO with a series of short, sharp tones. There's no way you can sleep through them, unless you've been shot with the dart from an elephant tranquilizer gun! The LED ring is also an innovative feature that works really well. The yellow light gives you an early indication that the alarm may sound if smoke/CO levels increase. The voice also announces what the problem is and indicates the room name as well. The red light activates while the alarm is sounding, and the voice once again announces which room that smoke/CO has been detected in. There's also the green "goodnight promise" that signals all is well when you turn off the lights. The white nightlight feature activates when the light is off and the Nest Protect detects motion. It's not very bright, but it does make a difference in pitch darkness. Since I'm not the type to be satisfied with just a built-in self test, I decided to set the alarm off with smoke from a candle. After a few tries of holding the Nest Protect over the candle and blowing it out, I finally got the yellow light to illuminate for a split second before it transitioned to red and started sounding the alarm and voice notifications. (I'm assuming it transitioned so quickly due to the fact that I was using a candle in such close proximity to the detector. With an actual fire or just some burned toast, I think the warning function would likely perform better.) I immediately got a notification from the Nest app with all the relevant information as well. I quickly silenced the alarm by pressing the button, but the red light continued to pulse for something like 10-15 more minutes. Once the red light quit pulsing, I repeated my candle experiment to test out the "wave off" motion detection feature. The alarm sounded immediately this time without providing a yellow warning. I waved my arms while standing about 5 feet away from the unit and successfully got it to shut off. However, I didn't get an immediate notification from the app this time. After another 6 minutes of waiting, I got a notification that "smoke was clearing," instead of another alarm notification. I think the discrepancy was most likely due to the alarms being in such close succession, but I'll never know since my wife made me promise to stop because I was being annoying and stressing out the dog with all the loud noises. If you want to reset the Nest Protect, you just have to press and hold the Nest button until it says its version number. The unit will then restart and restore all settings to default. You'll still have to go into the app and remove it from the registered devices list. For some reason there's also a manual reset button on the back that can be depressed with a paper clip. I tried this method before reading the manual, and only succeeded in bending the metal tab when I pressed too hard when nothing was happening. I'm not quite sure why that button is back there at all. As I stated before, the only reservations I have about this product are privacy concerns. The Nest Protect has a suite of sensors in addition to smoke and CO detectors, including a temperature sensor, a humidity sensor, three motion detectors, and an ambient light sensor. Nest devices will share information between each other, including motion detection information. Since I don't own a Nest thermostat or other Nest Protects, there's absolutely no reason for the device to share anything other than an alarm notification with the web service. I don't exactly want Google (who owns Nest) to have knowledge about what room in my house I'm in at any given time. I know I'm not that interesting, and the chances of anyone ever looking at my data are pretty slim, but just don't want that information out there. I'd at least like the option to flip a switch on the device or in software that stops it from transmitting any data other than smoke and CO notifications. Give me that, and the product gets five stars. I wanted to know if the Nest Protect communicates motion information through my WIFI network to other Nest devices, or if it sends everything through Nest's external servers. I scoured the website and couldn't find an answer, so I called customer support. The customer service rep informed me that Nest devices didn't share any data except if there's a smoke or CO alarm, so the Nest thermostat could shut off the furnace in such an event. I was confused because I thought I had read that the Nest Protects shared motion information with the Nest thermostat for improving the auto-away functionality, but I thought she probably knew what she was talking about, so I thanked her and hung up. I checked the website again, and discovered that the Protect does in fact share location information. So I called up Nest customer service again and got the same rep. When I asked her again about how the motion detection data is transmitted, she denied it at first, and then finally agreed that the motion detection information is shared after I walked her through the Nest website to the page that confirmed it. Then she acted confused when I asked her if the data was sent through the local WIFI network or through the Nest servers and back to each device. She finally told me that everything goes through the Nest servers, but I don't know if she was sure, or just telling me what she thought I wanted to hear. After this whole exchange, I'm not too confident about Nest's ability to protect my data. I read through the website and found the privacy statement under the legal tab. The privacy statement includes: "We pledge to...ask your permission before sharing your Personally Identifiable Information with third parties for purposes other than to provide Nest’s services...Under no circumstance do we share Personally Identifiable Information for any commercial or marketing purpose unrelated to the delivery of Nest Products and services without asking you first." The terms of service defines services as: "...the Site, Web App, Mobile Apps, and MyEnergy Service...Nest reserves the right, at any time, to modify, suspend, or discontinue the Services or any part thereof with or without notice." I'm not a lawyer or anything, but it seems to me if they can modify services at any time, and they can share information with third parties if it's related to services, they can probably justify a large range of usages for my data. Oh, and state and federal authorities can still court order, subpoena, or issue a search warrant for access to all information collected by Nest. So in closing, the Nest Protect is a great product, but I'm a little uncomfortable with their privacy policy, hence the four star rating. August 24, 2014
Rated 5 out of 5 by Cool Design, Lots of Features, Easy to Install This alarm was very easy to install as it comes with everything you need for the installation. Since the alarm is not heavy, I didn’t need to install on a stud, just make sure you don’t screw the holding bracket where there could be electrical wires. The instructions were very easy to follow. Settings are easy to switch on and off via the NEST app you download on your phone. I have an iPhone and a Samsung Galaxy 3 that I hooked it up to without an issue. I like the green light that comes on when I turn off the light, it's a sign that everything is working like it's supposed to be working. It also has a night light that turns on when you walk below it and the room is dark. It's not as bright as a regular night light, so it doesn't really light up your way while walking in the dark. I like the “Heads-up” feature. It warns you when smoke or carbon monoxide levels are rising, and the alarm is not as loud. I like the design, it’s not only functional but it’s also very stylish. I installed this near my laundry room because I’m always afraid the gas dryer could start a fire. September 2, 2014
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