Customer Ratings & Reviews

Fire and carbon monoxide alarms are likely not the first things that come to mind for most people as essential smart devices to integrate into a smart home system - at least, they weren't for me. However, after hearing about the Onelink combination smoke and CO smart alarm by First Alert, I realized that early, remote notification about emergency situations at home is a powerful use case for smart-home devices. On top of that, I was excited by the prospect that I might be able to gain this for my home's entire hard-wired, interconnected system by replacing just a single unit. So far, I think the Onelink alarm is a solid addition to my smart-home network. (The following is an honest account of my experience with the Onelink alarm, but in the interest of full disclosure, I received the unit in exchange for this review.) As a bit of background, I swapped out an older, hard-wired smoke/CO alarm for the new Onelink alarm. All of the smoke alarms in our home are hard-wired and interconnected with each other; the existing alarms were not made by First Alert. I am reasonably comfortable working with the electrical system in my home. This was not a difficult project - but please, if you are not comfortable doing something like replacing an outlet in your home, consult a professional that can safely perform the physical installation. Installation was simple. The Onelink alarm includes a couple of adapters that fit the plugs used by common hard-wired systems from competitors; this was a nice touch, as they will make the process faster and reduce the chance for error. In addition, it includes a three-wire connector with pre-stripped wires that can be directly spliced into your home's wiring. Although my existing alarm would have been compatible with one of the adapters, I opted to replace the existing harness with the Onelink's direct-splice connector. Even though I eschewed the adapter, it was a straightforward process - no more difficult than changing an outlet. (Naturally, I strongly recommend carefully verifying that your existing installation was done correctly and you have the hot and neutral AC wires identified. This is where using an adapter would help, as the plugs are all keyed so that you can't cross any wires. Again, if any of this sounds daunting, please seek help from a professional or consider purchasing the completely battery-powered version of the Onelink.) Once the unit was wired up, initial set-up was similarly easy. I downloaded the Onelink Home app to my iPhone, and followed the prompts to connect to the alarm and make some configuration choices (such as the alarm's name within my smart-home system, as well as the name of the room in which the alarm was installed). The Onelink alarm uses WiFi (as opposed to a dedicated smart home radio protocol like Z-Wave); the set-up process on iOS was able to automatically transfer my home WiFi credentials in order to get the alarm joined to it. Besides notifications for the alarm conditions, the Onelink has a built-in night-light that can be configured and controlled by your smart-home network. I ran the test procedure on the Onelink, and it correctly triggered the other inteconnected alarms in my home. The spoken alerts, which speak the name of the assigned room, were clear and make it obvious that the Onelink alarm is the source (instead of one of the other interconnected ones). In between spoken alerts, the Onelink also emitted a more traditional fire alarm alert sound. The Onelink alarm includes a built-in battery to act as a backup power source in case the main electrical system is off. The battery is not user-replaceable, but advertised as lasting for 10 years. Based on a warning label on the shipping box, it's likely a lithium battery and was sent mostly discharged from the factory for safety. This does mean that the Onelink Home app will initially report the alarm has having "low battery." It took a little longer than I expected (over a day), but eventually the internal battery must have charged fully and now everything is reported as "OK." I think First Alert could stand to provide a little more detail in the app to explain what is going on - such as listing it as "charging" rather than simply "low battery". I cannot yet completely vouch for how well the alarm works and whether it delivers on the feature that has the most value to me - notification to my smart phone in the event of emergency - simply because I have not had a fire or carbon monoxide emergency (fortunately). I will note that I carefully triggered both the Onelink as well as one of my older alarms with actual smoke from some burning paper to verify that they were working in the presence of real smoke. The alarms triggered, and the interconnection wire correctly caused other alarms in the house to go off. However, I did not receive notification to my phone. I am not yet sure if I msiconfigured something, or if perhaps the notification requires the alarm to be going off for a minimum period of time to prevent "false alarms" over minor events that are under control (e.g. smoke in the kitchen from a burned meal). I am optimistic that it is simply the latter, but if so, I would like to see First Alert document this in the manual rather than leave users like me wondering. (And if it's not the case - which is too soon for me to say - I would be disappointed that the alarm is not performing one of the basic features I was looking for.) In summary, if you are interested in smart-home/home automation and you'd like to integrate basic safety functions like smoke and CO detection, I think the Onelink is very much a product worth looking at.

I really wanted to like this smart smoke detector/carbon monoxide alarm, but the price/feature ratio just isn't there and the person who designed the installation plate needs to go back to school. The good: The siren is loud and their is a distinction between the fire and co alarms. Included are three wiring harnesses. Two for plugging into existing connections (adapter) and one for going wire to wire. Pairing the device to the home network was fairly easy The backup battery does its job in keeping the device powered when the your main line goes out. The bad: The voice commands from the unit are much softer than the siren and can barely be heard through a wall. There is also no volume control on the siren or voice. The attachment plate is OK at best. You have eight slots to choose from for your two included bolts (yes bolts, not screws). The holes do not line up with any electrical box type that I've found, so you're either going straight into dry wall or using a metal box cover and some self tapping screws. If you go the dry wall route, you'll also need the plastic wall inserts for the bolts as none were included. Push notifications on android did not fire till minutes later, if at all. It doesn't really tie into any other feature of your home system. Other devices for the same price tie into thermostats to shut down air flow in case of a fire. The android app has no family account settings. Either they all log in on the master account or not at all.

A great addition to my home, the Onelink-Smart Smoke and Carbon Monoxide Alarm can alert me if something is not right in my home concerning smoke and fire or carbon monoxide. With the use of the app, even if I am not home, I can be alerted through my phone of impeding danger or trouble in these areas. The Voice Alerts tell the type and location of danger, and should the power fail, the Battery Back-up is there for continued performance. I have the wired version of the alarm, but they do also make a battery version. Fortunately, I did not have to rewire, but was able to use one of the adapter plugs included. Just to be safe, I did cut the power to the alarms at the fuse box. The wired version of this alarm allows for up to 18 alarms to be interconnected with the exception that they all be compatible and run to the same circuit breaker. The alarm can also be installed as a stand-alone unit. To install the OneLink alarm, I removed the existing alarm and faceplate. Next, I connected the new faceplate and checked to see if the adapter’s wiring matched up with the manual. When the unit is connected to the faceplate, it will be activated. At this point a blue color indicator light powers up and the unit welcomes the new user. The OneLink app guided me through the rest of the installation. It took me a few tries to pair the OneLink unit with my phone and it was a little difficult to do so with the installation being on a 9’ ceiling, but that was my only installation issue. Customer service was of great help. I finally connected it through the Apple HomeKit. It can also be set up as a Skill with Alexa. I think it is important to read the entire installation book before installing the OneLink unit. Important information includes where to install it and where not to install it. The unit meets both UL217 and UL2034 which are standards for smoke and CO alarms. Everything needed to install the OneLink is included in the package. I particularly like that it has emergency notifications when I am home and away, has loud voice alerts, and is designed to be interconnected with other alarms in your residence or facility. With the First Alert Onelink Smart Smoke & Carbon Monoxide Alarm, I do feel my home is safer.

This seems to be a great smoke alarm/carbon monoxide detector. I say that is "seems" great, because I won't know how well it protects us unless there is an emergency, but I do feel protected. Also, I love that I could receive a warning on my cell phone as well, meaning that even if I'm not home, I'll know if something is wrong at the house. This is great peace-of-mind. The installation was quick and easy, but remember that this is the wired option. If you are installing it where you don't already have existing wiring, and don't want to install wiring, get the battery operated version.

This product replaces a wired smoke detector in my condo. Except it’s also a carbon monoxide alarm as well. Being a more modern device, it works with an Android or iOS device to get notifications. It can also talk to you if there are issues happening that you need to know about. Feature also works when you are away from your residence. It's also an Amazon Alexa device for voice control convenience and speaker features.. I prefer to use a Google Home Mini so don’t need this. I only have one of this kind of device in my one bedroom condo. You can connect up to 12 smoke alarms if you have larger property (includes multi levels). Every family should have a safety plan that includes smoke detectors and carbon monoxide alarms. I’m happy I have this product. Hope you have the same level of confidence I do.

The Smart Smoke and Carbon Monoxide Alarm by OneLink is the future of smoke alarms technology. I have the wired Onelink that I was able to place on my living room wall. After downloading the OneLink App on my smart phone it connected with the Smoke Alarm immediately and I was able to add home name, location and set up was complete between Onelink Smoke Alarm and smart phone. When setup is complete the App does all the work. You are able to see and check sensors and battery level including activity and recent history on a daily basis. I performed a test on the OneLink Smoke Alarm and it went very well in letting me experience what a real time speech and sound alarm would really be like and showing results of everything is OK with battery level and Wi-Fi once the test is done. What could be simpler in putting your mind at ease for you and family safety and protection.