Kidde Carbon Monoxide Detector, AA Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable

The Kidde Carbon Monoxide Detector is one of those small investments that delivers huge peace of mind. After installing it in my home, I immediately felt more secure knowing that my family is protected from something as serious—and silent—as carbon monoxide exposure.Setup was incredibly easy. It took just a few minutes to install, and the instructions were clear and straightforward. The digital display is a nice touch—it gives real-time CO levels, which adds an extra layer of reassurance beyond just an alarm.What really stands out is its reliability and thoughtful design. It has a clear, loud alert that’s hard to miss, and the test/reset button works without a hitch. I also appreciate that it’s battery-operated with a backup option, so it continues working even during power outages.In a world where safety often gets overlooked until it’s too late, this detector provides consistent, quiet protection you can depend on. If you’re looking for an easy-to-use, durable, and accurate carbon monoxide detector, Kidde is a brand you can trust—and this unit proves it.Highly recommended for any home, apartment, or even RV. It’s a small device that could make a life-saving difference.

Like its digital display to indicate the exact CO value. It seems it is hard to test the CO sensor but only to trust its brand. Easy to install. Alarm is loud enough. Works well. The product's date of MFG is 2024 Aug 12 so it should be good for the next 9 years.

Runs on AA batteries, has clear LEDs, and the test/reset button works well. Loud enough to get your attention. Super easy setup and small enough to take when traveling. Feels like a smart, no-hassle safety buy.

Easy to use and install . I also like the little screen and different color lights.

Great product. Ideally this one goes in the master bedroom so you can keep an eye on the digital reading. Standard type in every other bedroom. Gives me more peace of mind to see the actual reading. Batteries are good too. Tested with multimeter and they were all full strength.

I purchased the Kidde Carbon Monoxide Alarm ten years ago, and today, it reminded me of its reliability with a loud, audible chirp and a display reading "END," indicating that it has reached the end of its useful life. Over the years, this unit has proven to be incredibly accurate and dependable, providing me with peace of mind regarding my family's safety. It is long overdue that I write this review.One of the standout features of this alarm is the ease of replacing the batteries when needed. It’s a simple process that ensures the unit remains functional without any hassle. I appreciate how straightforward it is to maintain, allowing me to focus on what truly matters—keeping my home safe.Given my positive experience, I will definitely be purchasing another Kidde Carbon Monoxide Alarm to continue enjoying worry-free living for another ten years. Highly recommend this product for anyone looking for a reliable and user-friendly carbon monoxide alarm!

I am the "safety freak" of the family and this meets my approval, which is saying a LOT. This item was a great value for the money spent, while not compromising quality or safety. It is easy to use/read, and the alarm is super loud when tested - exactly what we need!

With emergency products like CO detectors, it's hard to know if they really work unless you're actually being exposed to dangerous amounts of CO. And if a CO detector doesn't work, you wouldn't know; instead, you'd just be poisoned while thinking that nothing was wrong. The only way to really find out if it works is to put it in an airtight container and generate CO.Because I like to play with dangerous chemicals at home, I decided to try this out. Adding formic acid to concentrated sulfuric acid causes the formic acid (HCOOH) to break down into CO and H2O. I got both of these chemicals for less than $10/liter apiece, plus shipping. I put some sulfuric acid into a graduated cylinder and placed it in a 1-gallon airtight plastic container. I then added small amounts of diluted formic acid and rapidly closed the container.Sure enough, it worked! It registered CO concentrations that were well within the ballpark of what I'd expect to get with the amount of formic acid I added (using the ideal gas law to figure out what the maximum CO level would be). In high concentration tests, I found that the alarm goes off within 3 minutes of hitting 500 ppm (which is dangerous but would take several hours to kill, giving plenty of time to get to fresh air). In another test, it went off after about 20 minutes of CO levels around 190 ppm, which is dangerous but not lethal. Its peak reading is in the 910-920 ppm range; it doesn't display levels higher than that. Needless to say, it goes off within a minute or two of such high CO levels and anybody who sees 900+ ppm on the display should leave their house and seek medical help immediately.It worked well in low concentration tests too. Due to some strange US regulation, it displays "0" for any reading below 30 ppm. If you press the "peak level" button, though, it will tell you what its peak reading was even if it was below 30 ppm. This works down to the 10-15 ppm range, below which you don't really have to worry about CO at all. Prolonged exposure around 50 ppm leads to an alarm after a couple of hours.Another, simpler test (which anyone with a CO detector should do to make sure it's working) is to light a candle in an enclosed container with the CO detector, then close the container. The candle will burn through the available oxygen and a fair amount of incomplete combustion (releasing CO instead of CO2) will occur as it runs out of O2. I tried this and got 96 ppm with a small candle in my gallon container; a larger candle would probably release more. I then tried it by lighting a crumpled piece of newspaper in the container and got >910 ppm, which is reasonable because paper and wood experience pyrolysis, which releases lots of CO. Combustion of small amounts of acetone (a fairly clean fuel relative to paper) resulted in 300-550 ppm depending on how hot the fire got before I put the lid on; the lower reading relative to paper helps confirm that it's reading accurately.In conclusion - this $20 detector works very well when tested with real CO. It's accurate, the alarm goes off at dangerous CO levels, it only goes off if CO levels are dangerous, and it might just save your life.