Features:

  • Complies with all current 10-year legislation in U.S. states/cities where required
  • Slim shape is half as thick as a standard smoke alarm; easy twist-lock mounting system and tamper-resistant design
  • Equipped with photoelectric smoke sensor optimized to detect larger smoke particles produced by smoldering fires; helps minimize the number of false alarms
  • Patented smoke entry system allows for a direct path to the sensor
  • Features loud 85-decibel alarm and single test/silence button
  • Powered by sealed, ten year lithium batteries to provide continuous protection for ten years without battery replacement
  • Patented smoke entry system allows for a direct path to the photoelectric smoke sensor
  • Nuisance free photoelectric technology reduces false alarms that result from cooking and shower steam
  • New sleek and thin design adds an element of style to safety
  • Meets UL217 standards and complies with legislative requirements for 10-year battery operated smoke alarms
Easy to Install and Connect

I bought these for our new (older) home to bring it up to latest code after researching on Consumer Reports, The Wirecutter and NFPA. I came to Same conclusion as The Wirecutter and NFPA - we shoud get different types of alarms for different areas of our home. I purchased six alarms and had them installed in about an hour, with an extra pair of helping hands to pass off tools. The instructions for syncing and installing the alarms was straightforward and easy to fix when I missed a step. Every test passed and we feel reassured that we chose a good product to alert our family should the unthinkable happen. Once we install a couple of ionization sensor alarms, we may get a couple more of these if needed.

A bit tricky to set up, but great once done

These things all connect to each other, and you can set them to "speak" the room they are in. So, if one detects smoke, ( or has a low battery ) they will all say "fire on living room". I wish they had more room names, as I had to use some that didn't quite make sense. When you set them up, they list the room names pretty quickly, and you have to hit a button when it hits the name you want. It was too easy to miss and get the wrong name. I wish that process was just a little slower, or somehow manual so you could click a button and step through the names until you get the one you want.

These detectors are a MUST HAVE.

These detectors are great! I originally purchased some of these wireless interconnected detectors for one of our vacation rental properties because the licensing authority required interconnected detectors in each bedroom (these are usually hard-wired), as well as in all the main areas of the house. They worked so well that I have since installed them in each of our homes as well as in my parents and my grown children's homes. Pros (+) and Cons (-): (+) - They very easy to install (I recommend self-tapping drywall screws and forget about drilling and the plastic toggles and screws that come with each unit - hold the base on the ceiling, insert 2 drywall screws, snap the unit onto the base and you're done - 2 minutes at most). (+) - They are really easy to program. I do it a little differently from the instructions - when I put the batteries in the unit before I put it up I push the test button when the unit initializes and then select the room location. Then when I snap the unit onto the base I open and close the battery drawer while holding the test button, the green light flashes and I go to the next nearest detector and push its test button and voila, the new detector is now on the wireless network and goes into its test mode in the room where I installed it. Very quick and easy! (+) - They are really loud, and when one goes off they all do, each one reporting the location of the originating alarm ("Fire in Child's Bedroom" for example, or "CO2 level in Kitchen is xxx parts per million - Evacuate!" when you have a combo smoke and CO2 detector). (-) - It would be nice if they provided a location recording function so you could program additional locations with your own voice because the detectors come with a finite set of locations that you can use. For example, there is no "garage" location to choose from, or "upstairs" and "downstairs" locations that might be duplicates (like hallways, bedrooms, etc.). There's only one "Child's" or "Guest" bedroom locations to choose from so it would be nice to be able to program each child's room with their name, so you could say: "Nancy's Room" or "Teddy's Room". As it is now, if you have 3 kids' bedrooms, each one would say "Fire in Child's Bedroom" and you would not know which child's or if it was upstairs or downstairs. Nonetheless, this is 100% better than just having one detector in each hallway and not knowing where the fire was concentrated at all. Bottom line... I recommend that you get one of these for every room in your house. It will be expensive, but shy of getting a complete central alarm system, it will be the best piece of mind that your dollar can buy for you and your family's home safety.

LOUD -- no chance to sleep through these.

We recently upgraded all of our smoke detectors in our house with these and the SCO501CN-3ST models. We put the ones able to detect CO in the basement near the boiler and one in the hallway on the main floor. These went in bedrooms, kitchen areas, office, basement, and everywhere else. It's quite a game to get them all setup but not to painful once you nail down the linking process. Testing them is even more fun as they all go off around you house. It's almost a game as they all go off around the house telling you which one you pressed to start the test. I think the only downside -- which is really the upside -- is that they are incredibly LOUD. Even setting them up you might want a pair of earplugs/ear muffs. I think everyone in town knew we got new ones. I was happy no one called the fire dept; though happy to know they would be able to if they heard them go off longer than a test!

So far so good.

pros: photoelectric easy install voice and location are neat wireless connectivity works fine so far. cons: None yet. I bought two two packs (have 4 total) of these after a few years of good experience with the smoke / CO variant..New house doesn't have gas so skipped the CO this time. Other thoughts: The mounting hardware is in the battery compartment. Generic drywall screws work fine if you are like me and find the hardware after all the brackets are hung. Doh Mine came with white instructions and yellow instructions. The white were basically useless and left off how to pair the wireless connectivity. Yellow was fine. There's a video on the First Alert website showing how to pair as well. Save yourself some hassle and pair them at the same time in the same room. I used a sharpie to mark the room for each one as I paired it and set the location. Made it easy peasy. I see other reviews are mixed. I'll update if these go to crap.

Easy to install

Easy to install and easy to pair to each other. There's no way to sleep through these when there all going off at once.

A little sensitive, but there's no way you'll sleep through these.

My house was built in 1933. The wiring is...creative, and the wood is dry. My house will burn to the ground in minutes if there is a fire. My house is also three floors including the basement, with a detached garage. We have bedrooms on every floor of the house. Having interconnected fire alarms is reassuring because if a fire starts in the basement, I will still wake up on the top floor. When we had standard smoke detectors, the one in the basement died in the middle of the night (despite checking batteries with a multimeter monthly) and the only reason I knew it was going off was because my dog freaked out about it and woke me up. That dog died last year, and the remaining dogs are deaf or don't care about sounds. It turned out convenient that most of our old smoke detectors had expired and needed to be replaced anyway (every 10 years, folks!). We started with just two -- one on the main floor in the living room and one upstairs in the hall at the stop of the stairs between the bedrooms. Then we added six more: the basement, three bedrooms, the hall at the bottom of the stairs, and the garage. We did have to move the one that was in the hall at the bottom of the stairs outside the bathroom because it was going off every time someone took a hot shower with the door cracked and the fan off. Having eight of these alarms going off is mind-numbingly loud. There is NO WAY anyone should be able to sleep through it unless they have a medical condition or are under the influence of something. I appreciate that the alarm tells you which detector is the trigger, but you have to endure the screaming beeping for a while before it finally yells "SMOKE IN THE HALLWAY/LIVINGROOM/BASEMENT". By that point, you've likely either already evacuated, or you're frantically searching for a chair so you can push the reset button to make it stop!

Nice to have interconnected alarms

These are great. They are very easy to install. Once you set one up as the main one, each one after that automatically connects to the first one. You set each one as a different room, and they talk to you. I was trying to make toffee a few weeks after I installed these, and I ended up burning it! There was tons of smoke, so the alarm in the living room was activated. Besides a typical alarm sound, the voice said something to the affect of, "Warning! There is smoke in the living room!" Then all of the other alarms in the house starting going off and saying the same thing. It was very loud, and not actually necessary since I knew there was smoke, but it's good to know that they all work with each other, and they would definitely wake me up if there was a fire and I was sleeping!

Great Detectors- Highly Recommend!

These interconnected smoke detectors work very well and are extremely loud. I paired these with three carbon monoxide/ smoke detectors, and they work as advertised. The verbal alerts indicating the typenof alarm and room location is a great feature. We have not had any false alarms since installation from cooking (they are not installed in the kitchen, but nearby.) Some have mentioned difficulty pairing the alarms. I did not receive a DVD but had no difficulty. Read the instructions carefully, as the pairing section is not included in the beginning witht the rest if the set-up. Some have also mentioned the poor design with ine button used for all programming, pairing and testing. I agree with this feedback. However at this price point and with all of the features, it is a small inconvenience that is easy to figure out after the first one. Highly recommend!

Who thought smoke detectors could be so fun?!

Our old detectors were way past their prime and due for replacement. Apart from wanting to switch from the ionization type (prone to false alarms from cooking), we also wanted to have them interconnected so an alert at the far reaches of the house would activate all detectors. The voice features along with the naming of locations was a bonus but one that actually makes it fun to test these. I would dread testing the prior ones because it meant testing them individually, but now we push the button on one and you hear a fun cascade of the test message along with the announcement of the location of the test. We get everyone involved to make sure they heard the message clearly on their detector. Programming the location of each detector and linking them into the existing set of detectors is a little confusing. I think the instructions could be improved. It's not clear how long you need to "hold" the button. It's actually only for less than a second but that's not what I think of when I hear "hold". Also it's really loud when you program the location so it would be nice if the voice during programming wasn't as loud. Fortunately you only do that once so it's a minor inconvenience. Consider earplugs if this bothers you. Finally there is a finite list of rooms. So we have two detectors set to "Hallway" and four set to "Child's Bedroom". It would be nice if you could add an optional number to the end so each was unique. But we can live with this. Summary: Installation is easy, the programming is slightly confusing but doable, features are great, sound is loud which is good (except when programming), interconnecting without wires is awesome and testing is fun!

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