FIRST ALERT BRK SC7010B-3 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 3-Pack

There are competitors, but this is a very standard combo unit, especially for residential installation. When houses are not wired for smoke/CO2 detectors, people install battery powered units, but these units only have the batteries as backup for when the power goes off. Otherwise they run on AC power. This is more reliable, and the detectors are all connected, so when one is triggered they all let you know. There is discussion about the type of detector. In those discussions, this type of detector is sometimes preferred, especially for residential usage. I am describing a combo smoke/CO2 detector. CO2 detectors are now hardwired to expire. The expiration date is based on when you first pull the insullating tab that comes in it, and they last about eight to ten years. This is a safety feature and yes, they all have it. You will know you have reached that point when you hear the multi-beep warning. Two things to know: 1) If you reset it, it will give you about two days peace. If you pull it off the wall AND remove the battery, you will have peace without protection until you replace it. 2) If you have more than one in your house, you might as well replace them all at once. Generally there should be one outside the door to each bedroom, which in some houses is one unit, but in others more.

Easy installation and they work and look well. Be sure to change them at least every ten years.

Overall, a very good unit, physically not obtrusive or annoying, just hangs on the wall watching for signs of a fire or high CO levels...barely notice it is there, until it goes off, but that's the purpose of its existence :-) Had an ionizing detector in our bedroom, kept going off whenever toast was burned in the kitchen on other side of house, LOL. (Full disclosure, we previously changed out the kitchen's to CO-only unit because smoke detection was not recommended in that zone, and it was a pure nuisance if doing anything beyond reheating something in the microwave...) After visiting the manufacturer's website, we found they recommended a photoelectric detector for bedrooms anyhow. Ordered this model because we have BRK/First Alert hardwired detectors in our house already, so their wiring plug was in place. Mounting base had to be changed, they are keyed by size to specific detector types so once installed, you don't rehang wrong type detector in the wrong area if you take any down for whatever reason...painting walls a different color is a good example of why one might temporarily remove a smoke detector. Really like the new broad spectrum sound for warnings, much easier on ears in general. Designed to not overload hearing aids yet still be detectable for people with hearing impairment. Can't couch for that part, but I can focus on getting safely out of my house when we do fire drills, instead of trying to cover my ears to stop the piercing pain, so it's a win for us :-) Safety advice: smoke detectors have a 10 year working life, and should be replaced accordingly per NFPA and BRK/First Alert's recommendations. With that, the first couple detectors we ordered on Amazon (specifically, from Amazon Warehouse Deals) were apparently rather old stock, having 2 and 3 years remaining before "expiration" and were each returned to Amazon with return comments that the respective unit was nearing end of NFPA's recommended effective life, should not be sold as "like new" when instead were *very old* stock -- 3rd one was a keeper, had a 2019 mfr date -- so word to the wise, check those dates for your own safety!

These units replaced older smoke only detectors in our bedrooms. Building code in many areas (including my own) now require smoke and carbon dioxide detectors. A few days after replacing I noticed a very dirty ceiling fan. The fan was cleaned REAL good! About 3 hours later all the detectors go off (they are linked)! I removed the bedroom detector and cleaned out, vacuumed etc.. reinstalled and no issues. A month later, I started dusting shelves in the spare, unused bedroom. I also shook the bedspread a bit. Less than an hour later the detectors go off! Same drill, removed and vacuumed. I left it down for a day or so. Reinstalled and no issues since. I like that these detectors use AA batteries in place of 9 volt. AA batteries are used more in my home than 9 volt. So I believe dust is one of the factors of a lot of false alarms. Just speculation.

Very good product. Installed and works great - very loud which is just what I was looking for. Just came through a house fire which started in the garage. This is great for the house but we are still looking for a fire alarm that can be installed in the garage and which has monitors for inside the house. Any ideas?

Delivered on time. Excellent quality. Easy to install. Might consider a bit pricey, but the life of my family is priceless! I feel good knowing that this product is installed.

Ordered 8 of these for my house andIve been very happywith them .Great product!!

We just moved into a newly built home that has the required hardwired smoke detectors throughout. Of course the builder just used a contractors pack of ionization alarms, including one just 10 ft from our kitchen. Two months in, and the alarm has gone off every time we open the oven. No visible smoke. Just heat and cooking vapours. That clearly wouldn’t do so we got this photoelectric alarm instead. It works great. No more false alarms from the oven. It clipped right in to the wiring from our BRK alarm, though I did have to loosen the two screws and switch the bracket. 5 minutes work. The fact that it is also a CO detector is just an added bonus. I only removed a star because I feel it could be priced better.

Arrived in good time and in good condition. Easy to install and works well.