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Onelink by FIRST ALERT Smoke Detector and Carbon Monoxide Detector | Hardwired | First Alert

3.3 3.3 out of 5 stars 806 ratings

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Hardwired

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About this item

  • SMOKE + CO DETECTION 2-in-1 smart smoke and carbon monoxide alarm alerts you to both types of danger in your home, with a photoelectric smoke sensor and electrochemical carbon monoxide sensor
  • MOBILE + VOICE ALERTS Alarm sends emergency notifications, via your phone, while voice alerts tell you the type and location of danger
  • A HOME SAFETY NETWORK + ALEXA Interconnects with existing traditional hardwired alarms and other Onelink devices (sold separately) to create a smart home safety network, so if one alarm sounds, they all sound; works with Amazon Alexa so you can ask Alexa to check the status of your Onelink alarm (Alexa device sold separately)
  • HARDWIRED + BATTERY BACKUP Hardwired alarm includes a 10-year sealed battery backup for protection in power outages; for maximum protection, hardwired alarms should be installed on every level of the home and inside each sleeping area
  • COMPATIBILITY Compatible with Apple HomeKit; can be used on both Apple and Android devices
  • INTERCONNECTIVITY: Unlike other smart combo alarms, Onelink can connect with any other hardwired alarms in your home (including First Alert and non-First Alert brands), and can send a mobile notification for any detected emergency, keeping your whole home safe and connected
  • First Alert warranty extends ten years from the date of purchase with proof of the original sales receipt and the product should be free from defect in material and workmanship
See more product details

Customer ratings by feature

Brightness
4.3 4.3
Easy to install
3.3 3.3
Tech Support
2.2 2.2
Value for money
2.2 2.2

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Onelink by FIRST ALERT Smoke Detector and Carbon Monoxide Detector | Hardwired | First Alert
FIRST ALERT Onelink by Smoke Detector and Carbon Monoxide Detector | Hardwired | First Alert
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Price-5% $128.88
List:$135.99
$42.99$80.97$42.99-28% $32.99
List:$45.99
-16% $56.99
Typical:$67.99
Delivery
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Customer Ratings
Easy to install
3.3
4.4
4.6
4.8
4.6
Value for money
2.2
4.0
4.6
4.5
Battery life
4.4
4.5
4.2
4.7
Sold By
TopTier Mane
X-Sense US
Amazon.com
X-Sense US
X-Sense US
Treatlife Official
power source
Battery Powered
AC
Hardwired
Battery Powered
Battery Powered
Battery Powered
sensor type
Electrochemical, Photoelectric
Photoelectric, Electrochemical
Photoelectric, Electrochemical
Electrochemical, Photoelectric
Photoelectric, Electrochemical
electrochemical,photoelectric
style
Hardwired
Hardwired Interconnected Model (with Voice Location)
Smoke + CO
RF Interconnected Model (with Voice Location)
Wi-Fi Connected Model
1Pack
alarm
Audible
Smart Smoke and Carbon Monoxide Alarm
Audible
Audible
Audible

From the manufacturer

Hardwired smart combo alarm
onelink
safety

What's required to use hardwired Onelink Smoke & Carbon Monoxide Detector?

You'll need to download the Onelink Home App to your phone or tablet, and for the non-alarm features, you'll need home Wi-Fi with 2.4Ghz and an 802.1 lb/g/n router

Once the Onelink unit is wired into my ceiling, what are the next steps?

Once the alarm is installed, the unit will walk you through setup with the Onelink Home App. If you have more than one unit, set each one up though the app as you install it before moving on to the next one.

How many Onelink Smoke and Carbon Monoxide Alarms can be interconnected?

The NFPA (Natiional Fire Protection Association) states that up to 18 total units can be interconnected, with a maximum of 12 of those being smoke alarms.

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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Onelink by FIRST ALERT Smoke Detector and Carbon Monoxide Detector | Hardwired | First Alert


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Product guides and documents

Product Description

"The Onelink by FIRST ALERT 2-in-1 smart smoke and carbon monoxide alarm alerts you to both types of danger in your home. Emergency notifications alert you to danger via your phone, while voice and location technology tell you the type and area of danger; the alarm also uses a traditional 85-decibel siren. Onelink interconnects with other existing traditional hardwired alarms and other Onelink by FIRST ALERT devices (sold separately) to create a smart home safety network, so if one alarm sounds, they all sound. This alarm is also compatible with Amazon Alexa; you can ask Alexa to check the status of your Onelink by FIRST ALERT alarm. The Onelink by FIRST ALERT Home App is compatible with both Android and iOS devices. This easy-install hardwired alarm includes an adapter plug so you don’t need to rewire, and a 10-year sealed battery backup for protection in power outages. The alarm is designed to last for 10 years, and will alert you when it needs to be replaced."

Customer reviews

3.3 out of 5 stars
3.3 out of 5
806 global ratings

Customers say

Customers like the appearance of the gas smoke fire alarm. However, some customers have reported issues with quality, connectivity, sound quality, and performance. For example, they say it's not working properly, the app doesn't send notifications, and the alarms are jarring. Customers are also disappointed with the noise, and battery life. Opinions are mixed on ease of setup.

AI-generated from the text of customer reviews

16 customers mention16 positive0 negative

Customers like the appearance of the gas smoke fire alarm. They say it's a well designed and nice looking product. However, some customers have reported issues with the setup process.

"...I like the look of these as they have a clean modern esthetic that fits my house...." Read more

"...So, I'm removing another star from my review. It's a neat device, but set up is/was an absolute pain and it works too well...." Read more

"...And for what it's worth, I find it aesthetically more appealing than the Nest product...." Read more

"...2. Appearance is nice. Fits snugly to the faceplate and looks pretty chique on the ceiling." Read more

102 customers mention57 positive45 negative

Customers are mixed about the ease of setup of the gas smoke fire alarm. For example some mention that installation was easy enough, mounting was quick and easy, connecting to their wifi was easy, and the app is easy to use. That said, others say that it was frustrating, flaky, and slow.

"...Connecting to my wifi was easy and it just worked. I was able to connect to device via the app and run a test. It worked great...." Read more

"...I had some difficulty setting up the first device until I remembered that my WiFi uses both 5 GHz and 2.4 GHz...." Read more

"...Most of the install time was dealing with the ladder. These are easy to test, and they have a configurable night light; I find this feature to be a..." Read more

"...Set-up for the first detector I purchased was fairly easy. I downloaded the Onelink app and had to set up a Onelink account...." Read more

171 customers mention44 positive127 negative

Customers are dissatisfied with the quality of the gas smoke fire alarm. They mention that it fails to connect to Wi-Fi, reports malfunctions, and is defective. Some say that the app is horrible and useless. Overall, some customers are disappointed with the product's quality and functionality.

"...The software seems glitchy to me, but I’m satisfied that it works well enough at the moment to meet my needs...." Read more

"...other alarms interconnected and that’s when I knew these were a terrible investment and I would never see $1000 back because I’m now was passed a..." Read more

"...The OneLinks are a little less expensive. I am using these with HomeKit. I had reservations because of the reviews here about difficulty with setup...." Read more

"...to connect with HomeKit, but gave a rather cryptic and mostly useless error message. One that the customer support rep couldn’t triage either...." Read more

132 customers mention14 positive118 negative

Customers are dissatisfied with the connectivity of the gas smoke fire alarm. They mention that the app does not send notifications, the device knows it's a test, and will not send a notification. The alarm sounds off making the notification pretty useless. It also does not receive push notifications and never connects with the network. Some customers also report connectivity and setup issues.

"...They worked as a normal smoke detector would, but my phone didn’t receive an alert. Moreover, it doesn’t even show up in my history!..." Read more

"...was on the first one where it was seeming to take a long time to pair with the app...." Read more

"...There is major software issues and would advise buying the $30 versions or a Nest(and I hate google products)...." Read more

"...It simply fails at the end and never goes on to connect with the network. Once I realized this, things started to get easier...." Read more

85 customers mention10 positive75 negative

Customers are dissatisfied with the sound quality of the gas smoke fire alarm. They mention that it has a jarring alarm and it starts to alarm randomly. Some customers also report that the alarm does sound when there is smoke, but it does not notify the device.

"...these alarms, especially with four of them interconnected, creates quite a lot of noise that is easily heard by the neighbors...." Read more

"...But at this point I’m livid that while these faulty alarms did interconnect, none of this was ever captured in the history nor did it send any push..." Read more

"...In that span of time, we've gotten at least SIX whole-house false alarms; which always seem to happen between midnight and 4 AM...." Read more

"...Great, the system works. I hit the button to silence it. The siren keeps going. I hit it again and again, and nothing...." Read more

33 customers mention0 positive33 negative

Customers are dissatisfied with the performance of the gas smoke fire alarm. They mention that it keeps going off at random times in different rooms when there was nothing wrong. The unit continued to trigger even after disconnecting. Some customers also say that the alarm doesn't catch well and randomly gets set off. They say it won't shut down easily and the problem keeps recurring.

"...I eventually do stop it, but seconds later, it starts going again. I silence it again. Still goes off. It keeps doing this...." Read more

"...I got the ladder out unhooked it from the electricity and it still kept going off. I was about to throw it when it finally stopped...." Read more

"...Recently a second unit also started randomly false alerting and would not stop, even after using the disable switch to permanently kill it...." Read more

"...Can’t promise that.One year in, it started randomly going off, verbally claiming a fire. Had to physically silence it...." Read more

26 customers mention0 positive26 negative

Customers are dissatisfied with the noise of the gas smoke fire alarm. They mention that the device refused to be silenced even after manual attempts, the app will not silence it, and the manual reset button on alarms didn't work.

"...Even more of an issue was that the device refused to be silenced even after manual attempts...." Read more

"...Making silencing the alarms much more difficult...." Read more

"...my eardrums drilled by the piercing sound, the silence function in the app only occasionally works, and I find myself climbing a chair to reach..." Read more

"...The app will not silence it, manually pushing the "silence" button will not silence it, unplugging it will not silence it...." Read more

23 customers mention4 positive19 negative

Customers are dissatisfied with the battery life of the gas smoke fire alarm. They mention that it's discontinued, has a bad battery, and drains at an alarming rate. Some say that the battery is outdated and can't be replaced.

"...The alarm related to a non replaceable battery that was indicated would last 10 years." Read more

"...devices, one is already gasping for life with its battery draining at an alarming rate...." Read more

"...I also had one detector with a bad battery right from the box.The Nest detectors that I have are far superior to these...." Read more

"...Did test it with some smokey cooking a time or two. ALSO the battery is some weird thing that you can only call them and order...." Read more

Does Not Behave As Advertised
1 Star
Does Not Behave As Advertised
I bought this product for its home-smart capabilities. I want to be aware of any emergencies at home regardless of where I am. I called before I purchased to ensure it would give me status and alerts when away. I was told that it would. I was also told that it connects to WiFi...which it does, but that doesn’t enable you to interact with the device when out of Bluetooth range.After installing this device, I ran tests on it. They worked as a normal smoke detector would, but my phone didn’t receive an alert. Moreover, it doesn’t even show up in my history! I had the unfortunate experience of dealing with their support department after this.Aside from having to bounce you around until they find someone who actual has some technical experience, they still had to “elevate” the matter. I made four phone calls and spent nearly three hours total on the phone just for it to be thrown over the fence to someone else. I’m supposed to be called back within 24 hours. I called them yesterday. Given that it’s Christmas today, that call isn’t happening.If this were not bad enough, the installation issues described in the other reviews happened with me as well. The app is needed to install and it was glitchy, skipping needed dart steps before timing out. This is probably because the device is developed to only allow changes when in Bluetooth range and the device has to be wired into the ceiling before the app recognizes it (I tried to use the app before turning the breaker back on and the device wasn’t found). Given the two restrictions, it’s easy to fall outside of Bluetooth range unless you’re on a ladder holding the two in close proximity.I have no intention of keeping a $100 product that is LESS smart than a $20 product at Home Depot. I’ll update this post if I ever manage to get my phone call and they’re able to resolve this to reasonable expectations...Update:I was contacted by customer support via email Christmas evening informing me that I would be called the next day. A manager called me in the morning and scheduled a precise time that a technician would call. The technician called me on time and had me reboot my router, my phone and disconnect the device from power. Then I unpaired the device and went through the procedures to pair it again (still took me three attempts). After doing all of this, I started to receive history and push notifications.The history reflected a test that I conducted as well as a simulated event with smoke. I disconnected my phone from WiFi and Bluetooth again to do this. After the device sounded the alert, I received a push notification within a minute of it going off. The software seems glitchy to me, but I’m satisfied that it works well enough at the moment to meet my needs. The technician filed a report on my experiences and hopefully they work the bugs out.Update:Today is January 2d. After the debacle with the first product was resolved to acceptable terms, I attempted to install a wireless version on a separate level of my house. After multiple attempts to get through the installation steps, I survived the process to successfully sync it to my HomeKit app.Yesterday, I started a fire (in my fireplace), but in a moment of absent mindedness I did not immediately open the flue. Within minutes, the wireless smoke detector went off. After opening the flue, I immediately looked to my phone to silence it, except my phone never received the alert, so I couldn’t. Even more of an issue was that the device refused to be silenced even after manual attempts. And finally - as an ultimate fail, it never set off the wired device. Given both of these were set up using the Onelink app and both were shown in my HomeKit app, the wired device should have definitely been triggered. This afternoon, I looked through the history of both devices, but as expected, yesterday’s alert was not reflected in the history archives of either device.I called customer support to let them know in hopes that the repeated failures would produce an improved response to make amends but, sadly, I was prompted to create another ticket. Onelink customer support operates as if they are the only option in this field. I have returned both devices and have asked for my refund. I will be looking to Nest or a similar provider to sell me a product that works!
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Top reviews from the United States

Reviewed in the United States on February 3, 2020
Style: BatteryVerified Purchase
3 people found this helpful
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Reviewed in the United States on December 25, 2018
Style: HardwiredVerified Purchase
Customer image
1.0 out of 5 stars Does Not Behave As Advertised
Reviewed in the United States on December 25, 2018
I bought this product for its home-smart capabilities. I want to be aware of any emergencies at home regardless of where I am. I called before I purchased to ensure it would give me status and alerts when away. I was told that it would. I was also told that it connects to WiFi...which it does, but that doesn’t enable you to interact with the device when out of Bluetooth range.

After installing this device, I ran tests on it. They worked as a normal smoke detector would, but my phone didn’t receive an alert. Moreover, it doesn’t even show up in my history! I had the unfortunate experience of dealing with their support department after this.

Aside from having to bounce you around until they find someone who actual has some technical experience, they still had to “elevate” the matter. I made four phone calls and spent nearly three hours total on the phone just for it to be thrown over the fence to someone else. I’m supposed to be called back within 24 hours. I called them yesterday. Given that it’s Christmas today, that call isn’t happening.

If this were not bad enough, the installation issues described in the other reviews happened with me as well. The app is needed to install and it was glitchy, skipping needed dart steps before timing out. This is probably because the device is developed to only allow changes when in Bluetooth range and the device has to be wired into the ceiling before the app recognizes it (I tried to use the app before turning the breaker back on and the device wasn’t found). Given the two restrictions, it’s easy to fall outside of Bluetooth range unless you’re on a ladder holding the two in close proximity.

I have no intention of keeping a $100 product that is LESS smart than a $20 product at Home Depot. I’ll update this post if I ever manage to get my phone call and they’re able to resolve this to reasonable expectations...

Update:
I was contacted by customer support via email Christmas evening informing me that I would be called the next day. A manager called me in the morning and scheduled a precise time that a technician would call. The technician called me on time and had me reboot my router, my phone and disconnect the device from power. Then I unpaired the device and went through the procedures to pair it again (still took me three attempts). After doing all of this, I started to receive history and push notifications.

The history reflected a test that I conducted as well as a simulated event with smoke. I disconnected my phone from WiFi and Bluetooth again to do this. After the device sounded the alert, I received a push notification within a minute of it going off.

The software seems glitchy to me, but I’m satisfied that it works well enough at the moment to meet my needs. The technician filed a report on my experiences and hopefully they work the bugs out.

Update:
Today is January 2d. After the debacle with the first product was resolved to acceptable terms, I attempted to install a wireless version on a separate level of my house. After multiple attempts to get through the installation steps, I survived the process to successfully sync it to my HomeKit app.

Yesterday, I started a fire (in my fireplace), but in a moment of absent mindedness I did not immediately open the flue. Within minutes, the wireless smoke detector went off. After opening the flue, I immediately looked to my phone to silence it, except my phone never received the alert, so I couldn’t. Even more of an issue was that the device refused to be silenced even after manual attempts. And finally - as an ultimate fail, it never set off the wired device. Given both of these were set up using the Onelink app and both were shown in my HomeKit app, the wired device should have definitely been triggered. This afternoon, I looked through the history of both devices, but as expected, yesterday’s alert was not reflected in the history archives of either device.

I called customer support to let them know in hopes that the repeated failures would produce an improved response to make amends but, sadly, I was prompted to create another ticket. Onelink customer support operates as if they are the only option in this field. I have returned both devices and have asked for my refund. I will be looking to Nest or a similar provider to sell me a product that works!
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Customer image
Customer image
55 people found this helpful
Report
Reviewed in the United States on November 16, 2019
Style: BatteryVerified Purchase
11 people found this helpful
Report