First Alert Carbon Monoxide Detector, Plug-In Alarm with Test & Silence Button, CO600, White, 1-Pack

Great product . Easy to set up

Good Product at good price.

Reliable protection. Economical 3 pack! Nice design.

How does one review a carbon monoxide alarm? I don't have a supply of carbon monoxide available, so I can't actually test the main job of the device. What I can say is that from what I can judge, this alarm is a good one. The small form factor means it is fairly unobtrusive in your home; you'll notice it, but after a while it fades into the background. It doesn't stick out from the wall very far, so you won't be bumping into it or tripping over it. Usage is as simple as can be, just plug it in. After doing an initial test to see that the alarm works (by pushing the button), you can basically forget about it. The constant red light lets you know that it is on and working.This product does wear out over time, loosing its detection capabilities I believe, so it will need to be replaced after five or seven years. I did have to replace the three in my house a year or two ago when they reached the end of their lifespan. Even with this, though, the device was helpful, as it began having its power light flash to let me know if was nearing the end of its life.For peace of mind, a reasonable price point, and a small design, this is a good carbon monoxide detector to get.

easy to install

They were refurbished so I got a deal and the work great.

Since most of the major appliances, stove, heater, water heater etc in my home are powered by natural gas I decided CO alarms would be a good Idea. This alarm has a small form factor so it does not take up all the space of the electric socket, you will still be able to use the top plug. Its a plug and play application. Plug it in run the test and you are good to go. Although small the alarm has a loud warning alarm in case CO is detected. I haven't experienced any false alarms or weird behavior from the alarm and so far is has worked well.The US Consumer Product Safety Commission recommends buying and installing a CO alarm that meets the requirements of the current UL 2034 safety standard. I saw a review here stating that this alarm was not UL 2034 certified, which is not true. The CO600 is UL2034 certified.Underwriters Laboratories Inc. UL2034 defines three specific alarm points by whichall residential CO alarms must alarm. They are measured in parts per million (ppm) of CO over time (in minutes).UL2034 Required Alarm Points:* If the alarm is exposed to 400 ppm of CO, IT MUST ALARM BETWEEN 4 and 15MINUTES.* If the alarm is exposed to 150 ppm of CO, IT MUST ALARM BETWEEN 10 and 50MINUTES.* If the alarm is exposed to 70 ppm of CO, IT MUST ALARM BETWEEN 60 and 240MINUTES.The detector must ignore CO levels of 30 ppm or less for at least 30 days and ingore levels of 70 ppm or less for at least an hour. There are detectors available that will alarm at a lower level. All detectors must have a silence button. Pushing it will silence the alarm for four to six minutes. If the concentrations stay above 70 PPM it will alarm again in six minutes. (Previously set at 100 PPM) The detectors have only two alarms, a full alarm and a trouble alarm. The second revision of UL-2034 detectors allowed (not mandated) warning alarms that sounded at low levels. Some found this confusing.Detectors manufactured under the new standard should reduce the number of nuisance alarms. These detectors must not alarm in the presence of the gases listed in the following table below the indicated level.Methane 500 PPMButane 300 PPMHeptane 500 PPMEthyl Acetate 200 PPMIsopropyl Alcohol 200 PPMCarbon Dioxide (CO2) 5,000 PPMMore info on UL-2034 can be found on Underwriters Laboratories website ul.comIf the device starts to malfunction/ give false alarms I will update my review.

This plugs in near my back door to the garage. No batteries needed. This is a must for monitoring the air for a gas that kills.