First Alert CO400-3 3-Pack Battery CO Detector
3-pack battery-operated carbon monoxide alarms with a loud 85-decibel alarm and electrochemical sensor. Easy installation and continuous CO monitoring even during power failures; some users note battery life concerns
Highlights
- electrochemical sensor
- battery operation
- 3-pack value
Pros
- battery-powered for continuous monitoring
- easy to install
- electrochemical CO sensor
- 85-decibel alarm for dangerous levels
- 3-pack provides multiple detectors
Cons
- battery life varies with use
- some reports of limited longevity
Best For
Features
- 3-pack, battery-operated carbon monoxide alarms for continuous monitoring during power failures
- Equipped with an advanced electrochemical CO sensor for accurate detection
- Loud 85-decibel alarm sounds when CO levels are dangerous
- Placement guidance: install on each level and in each bedroom for full coverage
- UL-tested First Alert CO alarms meet standard safety requirements; compact dimensions 3.4 x 1.5 x 5 inches