First Alert CO615 Dual-Power Plug-In Carbon Monoxide Detector with Battery Backup and Digital Display, White

I tested this with fumes and it worked very well.

The First Alert Carbon Monoxide Detector (CO615) is an outstanding safety device that gives us peace of mind. The plug-in design with a battery backup is perfect for uninterrupted protection, even during power outages. The backlit digital display is easy to read, showing clear CO levels at a glance, even in low light. Setup was simple—just plug it in, and it’s ready to go. The alarm is loud and attention-grabbing, ensuring you’ll hear it in an emergency. Knowing we’re protected by a reliable brand like First Alert makes this an essential addition to our home. Highly recommend for anyone prioritizing safety!

The 'hybrid' smoke/carbon monoxide detectors are always a compromise. This isn't. Why would you compromise on something that could potentially (silently) kill you while sleeping. Do you have gas burning appliances in your house? Then you need this.It's a dedicated (that's key) CO detector. It can plug straight into an outlet with the cord stashed inside, or you can pull the cord out and hang it on the wall. It DOES take batteries, but only two AA for backup in case of power outage. The digital display will tell you when the AA's need replacement (typically years without regular outages)There is a soft green LED in the front to let you know it's powered and working. Install it somewhere on the same floor as your appliances. (NOT in a furnace room or utility closet, but nearby) Keep in mind this is not a FOREVER purchase. After 5+ years they lose the ability to 'sniff' CO. That is a normal failsafe.Cheap insurance for you and your family. I hear once or twice a year about some poor family who gets wiped out by CO. Don't be them.

Decent product. Consumer reports says this model detects carbon monoxide with an excellent rating. It plugs in and does not need any further stabilization beyond that. It comes with 2 AA batteries that are easily installed. There is a difficult to see green light that shows you the product is working. I had to unplug it a couple of times to convince myself it was on. If you press the button on the right you are shown a blue screen with the current carbon monoxide level which should read 0. The button on the left is a silence/ test button. I thought it always displayed CO level. It does not or I would have given it 5 stars.

Easy to install and set up.

Great product

It's a CO2 alarm, nothing flashy or fancy. Plugs into the wall, green light comes on and hopefully it's monitoring the air as it's supposed to. We have a propane gas stove and after having a burner repaired the repairman recommended an alarm. I thought my smoke alarms were dual alarms but turned out they are not so this alarm makes up for that. Got two of them and both seem to be working just fine. I hope I never have to find out for sure.

Here are my first impressions and what I liked about the First Alert C0615 device:1) This unit comes with two Energizer E91 batteries. Yes, batteries are included with this product). After inserting the batteries and plugging this into the wall outlet in the bedroom, I saw a battery meter flash. It showed the battery had full power.2) The battery door is on the front of the unit. I like this design because you can have access to the battery compartment while leaving the unit plugged into wall. Also, I was able to open the battery door easily with one finger.3) I like the display button. When pressed, the unit will show you the highest carbon monoxide level recorded. This is something I plan to monitor often.4) Green light vs Red light. When I plugged it in, the light is green. Should the device ever detect unsafe levels of CO, the light will turn red and the audible alarm will go off. While I hope to never see the red light, it is reassuring to see the green light and know the room is safe.What you might like to know about this product:1) I recommend that you open the packaging from the bottom. I could not separate the plastic packaging at the top. However, it easily opened at the bottom, and continued to open all the way along the sides - up to the top, where I could no longer separate the plastic seal.2) All CO monitors that I've researched intentionally stop functioning after 5-7 years (for your safety). This is due to the life of the CO sensors. I've owned KIDDE brand and now this First Alert brand, and they all expire. Replacing these devices after 7 years is piece of mind to ensure you always have a functioning CO sensor that will accurately detect carbon monixide.3) This unit should be replaced 7 years from the month/year you first installed it. (see the bottom of page six in the owners manual for more information about this).4) This particular brand/model is currently ranked #1 by a leading consumermagazine.For best results:1) Use only Energizer E91 batteries and replace them immediately when the unit tells you to. Never use rechargeable batteries with this device.2) Install the device away from windows or fans. (Blowing air may prevent CO from reaching the sensors).3) Install the device 10 feet away from a water source (bathroom or laundry room).4) The device is intended for bedroom and living areas. Do not install this in the kitchen area or in the garage.