Kidde Carbon Monoxide Detector, Plug-In with 9V Battery Backup, Digital Display, 85 dB Alarm, LED Status Light Indicators, 3rd Edition

I needed this for a rental property that we are selling. It provides both battery backup as well as plug in power. It is easy to operate, inexpensive and does the job.

Quality Kidde brand CO detector. I replaced my original one with this identical one after 10 years of service, when it finally beeped and showed "END" in the display, which renders it useless, which is by design. Ironically, I never had any CO issues or alerts, until about a few months before its 10th anniversary in service. My home's natural gas boiler was over 25 years old, and begin leaking CO from incomplete combustion issues. This Kidde CO detector audibly alerted me and displayed the current CO level as well as the maximum CO level that it had recorded. Very simple to use and displays basic, yet useful information. I was able to open the windows and ventilate my house to prevent the excess CO buildup from harming us, thanks to this CO detectors audible & visual alerts. Hope they're still making this model 10 years from now, when I will need another one, or if I decide to move and want to purchase a new one. It's certainly not the cheapest CO unit on the market, but it's a good value for the money. Oh, it plugs directly into any standard 110-volt power outlet and it has a 9-volt battery backup, battery included. Although they recommend you replace the 9V backup battery every few years, I never replaced mine, and it was still almost as good as the day it was installed. My Kidde CO detector is plugged into an outlet in our upstairs hallway just outside of our bedroom. Fortunately, it also fit perfectly next to (below) my plug-in doorbell, which was a huge plus! I'm planning on installing one in the basement, near the gas boiler as well. Should have done that years ago, as we would have likely received an earlier "heads-up" that there was a combustion problem with the boiler. One last note: You can remote wall-mount this unit also. Cool feature! If you look at the last picture that I posted with this review, you can see that when the rear access cover is removed to access the backup battery, there is extra cord stored on the opposite side of the battery. The connected main power source plug can be easily removed and relocated/extended, via the corded connection, in order to have the CO detector located somewhere other than directly plugged into the power source. There is also a handy little clear plastic packet included, containing two wood/mounting screws and two wall mount plastic expanding inserts. (Not shown in picture.) Just can't say enough good stuff about this unit. Very pleased with it!

I purchased the Kidde Carbon Monoxide Detector for my home to replace another unit that had expired. The Kidde Detector plug-in design with a 9-volt battery backup is very convenient & easy to use. It offers continuous protection even during power outages. The digital LED display clearly shows CO levels, which is helpful for peace of mind. Unit came ready to use, with battery already installed. We just pluged it in and it was ready to use. We feel confident that our family has chosen a great carbon monoxide detector for our home.

This works great, but it would be nice if the plug folded in for travel...

Upon recommendation for ability, and the fact our current CO detector is pushing seven during renovations. It attaches to the ceiling. Figured replacement early based on quality of function for new device and huge savings to buy two as singles if worth it. As vintage ceiling tile are being installed and this device is flexible as to where it sets up. Can be plugged in with the back up battery or wall mounted with battery alone. Although it’s a bit large has a keen sense of detection. There’s no price or device size that matters with safety. But if ya can score a discount kudos. No matter what detector you buy make sure it has a digital read on how much CO2 is invading when it does. To know what’s safe … 0 😁 all seriousness, under 30. The booklet explains the levels. How the device will function in a warning situation. Symptoms o look out for. How long it’ll take to read CO2 depending on how severe it is. It’s recommended to take one on trips when staying at hotels and this detector is easy to set up anywhere. The two pronged action is helpful since this vintage house has a mix of two and three. But for a trip the 9 volt battery is good to go. For RVers this is a must have. Even in a van camping. Better to be safe than sorry. Tip: Write the date of install in permanent marker on the face. This way no need to remember. Tip 2: Same with smoke and fire detectors. For those , what I do is write the yr and month the battery is changed every time. Thin permanent marker should leave plenty of room. Unless hardwired and in ten you just emplacements it. Still, add the date of install. Same with fire extinguishers. Doesn’t hurt to have the fire department inspect it periodically. I know people who’ve lost their hem to fire. Not fun. I know people, like myself, a CO detector got us outta the house. What I like about this detector is the directions have great specifics for set up to avoid false positives and a freak out. Yeah, I did. It was scary. Thank goodness the two times it was for real we were safe. Though at that time we didn’t have a level readout. That’s what makes this gem such a peace. Not sure how long the sale is for. But the singles are a great price now. Hope you score a savings, too. Hope I never hear these defectors go off. But I feel save knowing new ones are in place every ten or less years, if your renovating, where to restock 😊

After researching, I bought this detector because it detects much smaller amounts of carbon monoxide than most of the others I looked at. According to industry standards, this brand is recognized as the best on the market. The only draw back; It's so heavy, that it leans away from the wall, where it's plugged into an electrical outlet. To solve this, I put some duct tape behind the unit, to hold it to the outlet cover. Now it stays against the wall, without leaning away from it. A good quality product, and not to obtrusive.

I purchased the Kidde Carbon Monoxide Detector for my home, and it has been excellent. The plug-in design with a 9-volt battery backup is very convenient, ensuring continuous protection even during power outages. The digital LED display clearly shows CO levels, which is helpful for peace of mind. Installation was straightforward—just plug it in and insert the battery. The alarm is loud and responsive, and the unit has a solid, durable feel. I also like the compact design, which fits nicely on any wall without being obtrusive. This detector gives me confidence that my family is safe from carbon monoxide, and it’s reassuring to know it’s reliable and easy to maintain. Simple to use, highly dependable, and a must-have for every home.

I'm 75, and I've owned several generations of fire, smoke, and carbon monoxide detectors in the past 40 years in my house. The current Kidde Carbon Monoxide Detector in my opinion is a distinct improvement over the over my previous carbon monoxide detectors for a number of reasons: 1. Location: The unit can be plugged into any outlet or run off a 5' power cord and set on a counter top. Despite folklore that carbon monoxide is heavier than air or lighter and rises, carbon monoxide is actually fairly close to room air in weight and thus tends to diffuse throughout the room and the house. As a result, I plug my Kidde detectors into low level electrical outlets, well outlets over kitchen counters, and in the basement into a ceiling outlet. 2. Dependability: The unit runs on AC with a battery backup and a long life-span from a top manufacturer. 3. Monitoring: The unit continuously monitors carbon monoxide with a display that I can read from across the room. The unit also emembers past peak incidents. 4. Alarm: The alarm is loud and persistent. 5. Style: So many units look cheesy, like they are Pac Man vintage odd shapes, lettering, embosses, etc. I remodeled my house and I winced at the contrast between the new clean lines of the interior refurbishment and the dorky look of my old carbon monoxide detectors. The Kidde unit looks modern--a clean white rectangle with subdued buttons and window for the data display. Some people want units that talk to each other, float across the ether via the internet, etc. Hey people. We are dealing with carbon monoxide! The house isn't going to burn down. The alarm is loud enough to be hear throughout the house. Pay less, and have less complexity to go wrong. Keep it simple for carbon monoxide detectors.

I have a boiler in one of the bed rooms so thought it was important to have a good alarm .put battery in plugged it in .Reading came up as "0".The next morning it did intermittent bleep I went to check it the battery was flat the plug was red hot ,fire hazard so I sent it back cost me £12.75 to send it to Spain !!!