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Nest Introduces $129 'Protect' Connected Smoke and Carbon Monoxide Detector

In line with a report from last month, iPod creator Tony Fadell's company Nest today announced the launch of Nest Protect, a $129 connected smoke and carbon monoxide detector for the home. The detector wirelessly connects with other units and with the Nest Learning Thermostat to enhance the functionality of each product while also offering a more informative and flexible experience for users.
These products should keep us safe, not annoy us. Nest Protect: Smoke + Carbon Monoxide does much more than just sound a shrill alarm when there’s danger in your home. It speaks to you, telling you where the danger is and what the problem is. And before it sounds a piercing alarm, Nest Protect gives you a friendly Heads-Up warning that you can silence with a wave of your hand – no more swinging towels or brooms to try to quiet a false alarm. It integrates with your mobile devices and even messages you if the batteries run low, avoiding that all-too-familiar midnight low-battery chirp.
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Nest Protect contains six different types of sensors (photoelectric smoke sensor, CO sensor, heat sensor, light sensor, ultrasonic sensors, activity sensor) to help the device interpret its environment, and includes a green glowing light that can serve both as a quick indicator that the device is functioning properly after lights are turned off and as a nightlight, automatically lighting a person's path when it senses their movements.

The connected nature of Protect allows multiple units to alert users to rising smoke or CO levels anywhere in the house while also specifying where in the house the issue is occurring. Integration with the Nest Learning Thermostat improves the thermostat's Auto-Away feature, which automatically adjusts heating and cooling based on whether anyone is in the home, allowing Protect units to serve as remote sensors for detecting any occupants in the home.


Nest Protect is available for pre-order now and will launch next month. It is priced at $129 and be available in both black and white versions, with each color being available in wired and battery-powered versions. Users will be able to control Protect and receive alerts through the Nest Mobile app for iOS, which will updated with Protect support when the device launches.

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Posted: 12 months ago

I love nest,I really do,however I'll have to pass on these. My home is 3288sft. 5 bed 4 baths,living room,dining room,family room....plus I have smoke detectors in my attic and garage. I'd need about 10 of these. That's just too costly for me. Love their products though. I bought two of their thermostats,one for upstairs one for downstairs. They say you can't put a price on safety,so who knows. I'll have to see just exactly how many I need. Great product,just wish they were cheaper.


Yeah same here. I have an 8000 sq ft home with 2 Ferraris. Plus I have a 1000 sq ft gazebo next to my 2 hole golf course. Gonna have to pass.
Rating: 18 Votes
Posted: 12 months ago

So it's still going to take batteries? What a stupid design.


Right near the end of the article - "available in both black and white versions, with each color being available in wired and battery-powered versions"

Seems cool but a little expensive considering you will most likely have to buy a few.
Rating: 10 Votes
Posted: 12 months ago
Pssh $129! I'll be a buyer at the correct price point of about $40. Until then, stick with the Kidde alarms.
Rating: 8 Votes
Posted: 12 months ago
If you have a typical house with three bedrooms, a kitchen and a living room, then you need five smoke detectors. At $129 each, you would need to spend $600+. If you have a basement, then you may need more and may spend more. And you'll spend even more if you have them professionally installed.

If you have that many new devices that are on your wifi, how will your bandwidth fare? Will you need to pay for even more expensive wifi speed?

If you have cathedral cielings as I do, then you won't be able to wave your hands in front of it to shut it up as it will be more than the 2-8 feet from you.

This will be a cash cow for Nest as most homes only have one or two thermostats, but most have three to ten smoke detectors. Mine has seven - and I'm in a condo.
Rating: 7 Votes
Posted: 12 months ago

Compared to the nest it does look pretty stale though


Do you really want a device like this to be super visible day to day? Maybe some people do. I want it to be visible if there is a problem, and just blend in any other time.
Rating: 7 Votes
Posted: 12 months ago

Right near the end of the article - "available in both black and white versions, with each color being available in wired and battery-powered versions"

Seems cool but a little expensive considering you will most likely have to buy a few.


They should make the "expensive" one to act as the master, and some simpler slave units that are only slightly more expensive than a current high-end smoke/CO detector, but add a radio transmitter that just chirps its status to the master unit on a regular basis.
Rating: 7 Votes
Posted: 12 months ago

So it's still going to take batteries? What a stupid design.


Do you even know how a smoke detector operates and how it has to comply with safety code? In the case of a smoke detector, do you even know what safety code implies technically speaking? Before saying such non-sense, why don't you look it up and then post an informed comment?

It's becoming increasingly annoying to read people only on MR to point fingers for random reasons when the most they can achieve in a day, it seems, is to be sitting in front of a screen to do just that - pointing fingers for no reason.

I'll buy 6 (even if it's still taking batteries, duh) in the meantime.
Rating: 7 Votes
Posted: 12 months ago
How many detectors does the average house have? I'm pretty sure my house has about 7 and it's a rather average size. That's quite the chunk of change for something that produces little benefit. I think the most useful part is that it tells you which room the smoke is coming from, but unless you have one in each room this feature isn't very useful. The fact that it lights up as you're walking at night is cool, but the flashlight in iOS 7 is pretty easy to get to as well which mitigates that benefit for me. I suppose this is more useful for people who burn things all the time? I've never set off a smoke alarm. I think my wife set one off once in the years we've been married. If our children turn out to be pyros this could prove beneficial.

What would be nice is if these smoke detectors—which seem to have decent speakers in them—could be used over AirPlay as a house-wide speaker system for music. This would work especially well on the wired models where battery life isn't a concern. It would also be great if you could use it like an intercom by speaking into the app and making announcements over the system, such as telling the kids upstairs that dinner is ready (or having some preset buttons to make announcements using the built-in voice actor). Another great feature they could add: Ability to put the house in lockdown mode while away on a vacation or during the day when at work. If it detects any motion, it sends you an alert.

Does anyone know if this will work with the Nest thermostat? I love my thermostat, but sometimes it goes into auto-away when I'm in my office for a few hours working on client projects on the weekend. If the motion detectors worked in-tandem with the thermostat, then that would allow better detection for auto-away. Having temperature sensors in each smoke detector would also be handy for having the thermostat even out the temperature throughout the house. My thermostat is downstairs and sometimes Nest doesn't get the temperature correct upstairs.
Rating: 6 Votes
Posted: 12 months ago
Never been a fan of combo smoke+CO detectors.

Smoke Rises... Carbon Monixide falls. You can't place one detector in one position and get good readings. You need a smoke detector high and a carbon monixide detector low to get good early warning detection.
Rating: 6 Votes
Posted: 12 months ago

So it's still going to take batteries? What a stupid design.


The wired version has batteries to detect a fire when your power is out. Modern fire codes require this so you will still have protection during a power outage.
Rating: 6 Votes

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