Kidde Hardwired Smoke & Carbon Monoxide Detector, Battery Backup, Interconnectable, LED Warning Light Indicators

I recommend this company , purchased almost five years ago fire alarms are still working I am happy with them !!

I bought this product to upgrade my 11 year old Kidde smoke detectors throughout my house.Pros:+ Comes with a wiring harness receptacle compatible with my old Kidde smoke alarm (I didn't have to touch my existing wiring)+ Installation with pre-existing wiring took about 5 minutes per alarm with a Philips screw driver as the only tool+ Comes with two additional adapters to allow conversion from an incompatible harness to the one this unit uses (Edit: First Alert, BRK and FIREX are the other harnesses supported)+ The batteries are 2 AA and accessible without removing the unit from the ceiling (my old one used 9-Volt batteries)+ Comes with 2 alkaline AA batteries in the box+ The alarm tells you with a recorded voice whether the alarm is smoke or carbon monoxide and it is intelligible+ The adapter plate works well with different screw mounting scenarios+ It is white - my old alarm was more of a Navajo white+ Testing the alarm sets off all the alarms that are networked (the older ones went off too)+ The plate covers the same or a little more than my old fire alarm so there are no visible marks from the old one+ Since my house is hardwired for it, the alarm in any part of my house can set off all the alarms in the entire house giving quicker time to react (if you don't have the wiring in place this is not the product for you)+ There is a visible green LED light when the unit is powered by the 120V AC systemCons:- It costs a bit more than the version that requires removing the unit from the ceiling to replace the batteries- There are a few warning labels on the sides that are white and yellow that are hard to peel off - they are small and hard to see on ceiling though- Edit (01-25-2015): There is a product recall on this unit on Kidde's website under "For Owners -> Product Alerts" for alarms with this model number, however the date on the alarms I purchased through Amazon is 2014 Jun 25 which is not covered by the recall as of this writing - I have personally not observed any false alarms with the units I have so farWhy buy this unit over just a smoke detector? A few years ago my brother and his wife nearly died from carbon monoxide poisoning at their vacation cabin. The furnace had developed a problem without warning and as my brother and his wife went to bed she became ill. He tried to help her but was virtually paralyzed in bed and only able to reach for the phone next to him to call 911. Realizing that they were in big trouble his wife managed to crawl to the window and get it open before she became incapacitated. The paramedics arrived a bit later and they are fine now.

My old one was a KN-COSM-IB. This one is KN-COSM-IBA. This one (IBA) fits the (old) plug-in that is in the ceiling hardwired to electrical. (Also has battery back-up.) In my pictures, the first picture is the new one. Manufacture date was Oct. 28, 2022. (Today is 11/22/23.) The second picture is the end of the wire hanging out of the ceiling. Both of these smoke detectors/carbon monoxide detectors fit the same end, although "pinching" the outer part is not easy on the fingers. (Might want to wear kitchen gloves or something.) Another reviewer wrote the same thing, that IBA can replace the IB, and they are correct. So the new one will come with the wires and stuff ("quick connect 120 volt ac wire harness"), but you don't need them. This detector is good because it tells you why it is beeping. It speaks either "Smoke", "Carbon Monoxide", or "low battery." I'm glad that I found a replacement where I didn't have to hire an electrician to put it in. If you were able to remove the old one, you'll be able to replace it with a new one in a couple of minutes.

Like several others before me, my old Kidde IB interconnected alarms started giving me the end-of-life 2 chirps every thirty seconds this weekend, one by one. I find that to be ridiculous - that a product just decides it's time to stop working because of time. You can't cancel it, you can't pause it. I doubt it has anything to do with actual performance, but rather a set "time" that it just stops functioning. What if your phone decided after 2 years it would stop working? Or your TV? Not because it wasn't performing, but because they put an "end of life timer" in it? Really sad. And frankly, it sounds like these have the same "feature." Although I read that these have 10 year lifespans, which is much better than the 6 of the IB models, it's still annoying.In any event, I bought 3, one for each level of my home. Replacement was mostly a breeze, two snapped in with the same wire connectors as the IB models before them, so there was no rewiring to be done. Twist off the old, unplug, take the new one, pull out the "pull tab" to initiate it, then plug it in and twist it. The only trick here was that one of the new ones, the connectors were slightly off center from the "holes" for the plug, so it took a lot of elbow grease to get it to finally connect and stay connected. Tested each, which because they are connected, each one causes the others to go off as well. Success!Tested while frying up some bacon, and they kicked off like they were supposed to. So I know they're working, at least for smoke!There are a couple of concerns I have with these - they run off 2 AA batteries. The old ones ran off a 9-volt. I have concerns about the longevity of 2AA vs 1 9-volt. But time will tell. Also, I find it odd that they'll put voice to "carbon monoxide" and "fire", but all of the other warnings such as battery life or end of life warnings are chirps that you need to look at the key to decipher. So weird.The best part of these is that I really like the placement of the batteries in the new one - on the surface! So you don't have to remove the unit to replace the batteries now, just pull open the battery compartment and replace in place! That's a nice touch, for sure.At the lower end price point of interconnected smoke alarms, I'm decently happy with these for now. Of course, I've only had them for a few days. I just hope they last much longer than the IB model.

I have 7 smoke detectors in my house that were all installed around 2017 but had to replace one. Big box stores only had this one but without adaptor so I would have had to re-wire to install a replacement. Happy that the adaptor is included with this purchase as want new smoke and CO2 monitors to sync together with older ones and did not want to have to rewire the one that failed or replace all 6.

Arrived early! Also if needed an additional wiring harness was included at no additional cost. Installation was quick and easy!!