First Alert CO600 Plug-In Carbon Monoxide Alarm
- Electrochemical carbon monoxide sensor
- 85 decibel audible alarm
- 120 volt wall outlet, plug-in
- One button to test and silence
- End of life timer, UL listed
- No battery backup, no display
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A plug-in carbon monoxide alarm with an electrochemical sensor, a loud horn and a single test and silence button. It has no battery backup and no display, so it goes quiet in a power cut.
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ASIN: B000FDLFLKModel: CO600Category: Carbon Monoxide Detectors
Overview
A hallway or bedroom outlet is where a plug-in alarm like this goes. An electrochemical sensor watches for carbon monoxide, and the horn sounds and re-alarms if levels persist.
Plugging in is the whole installation, so it is a fast fix for a room without protection. The limitation is the lack of backup, because the unit stops working when the outlet loses power, and it shows no reading.
Who it's for
Homes with fuel burning appliances that need another alarm on an outlet. Buyers who want protection during a power outage should look at a model with backup, since this one lists none.
Pros and cons
- Plug-in, no wiring
- One button test and silence
- End of life timer
- No battery backup
- Needs a free outlet
- Stops during a power cut
Performance notes
The electrochemical sensor reacts to carbon monoxide in the air and triggers the horn when levels are elevated. It sounds again if levels persist after a silence. The end of life timer tells you when the unit is due for replacement.
Specifications
| Brand | First Alert |
|---|---|
| Model | CO600 |
| Dimensions & fit | |
| Item Dimensions D X W X H | 2.8 x 8.5 x 6.75 inches |
| Power & efficiency | |
| Power Source | Plug in, corded electric |
| Construction & materials | |
| Color | White |
| Enclosure Material | computer |
| Included components | |
| Included components | Alarm and user's manual |
| Other details | |
| Sensor Type | Electrochemical |
| Alarm | Audible, 85 decibels |
| Number Of Items | 1 |
| Product Style | Plug in alarm |
| Item Highlight | CO600 |
Frequently asked questions
Is the First Alert CO600 a smoke alarm?
No. It is a carbon monoxide alarm with an electrochemical sensor, not a smoke detector.
Does the First Alert CO600 have battery backup?
No. The listing says no backup or display.
How loud is the First Alert CO600?
The listing gives an 85 decibel horn.
What comes with the First Alert CO600?
The listing names one alarm and a user's manual.