First Alert CO400B Single Gas Carbon Monoxide Detector – White
Works during power outages. No installation required. Place or mount almost anywhere. Mute/test button to quiet unnecessary alarms, test alarm function. Low battery mute quiets low battery signal for up to 8 hrs. Front-open compartment allows battery change without taking alarm down. Electrochemical sensor is the most accurate technology available for detecting carbon monoxide.
- Low battery warning
- 85 dB alarm
- Meets UL2034 standard.
- Uses 9 V battery, included
- Dimensione: 8 x 3 x 7 inches
Product Information
Product Information
Shipping & Returns
Shipping & Returns

First Alert CO400B Single Gas Carbon Monoxide Detector – White
First Alert CO400B Single Gas Carbon Monoxide Detector – White
Works during power outages. No installation required. Place or mount almost anywhere. Mute/test button to quiet unnecessary alarms, test alarm function. Low battery mute quiets low battery signal for up to 8 hrs. Front-open compartment allows battery change without taking alarm down. Electrochemical sensor is the most accurate technology available for detecting carbon monoxide.
- Low battery warning
- 85 dB alarm
- Meets UL2034 standard.
- Uses 9 V battery, included
- Dimensione: 8 x 3 x 7 inches
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Works during power outages. No installation required. Place or mount almost anywhere. Mute/test button to quiet unnecessary alarms, test alarm function. Low battery mute quiets low battery signal for up to 8 hrs. Front-open compartment allows battery change without taking alarm down. Electrochemical sensor is the most accurate technology available for detecting carbon monoxide.
- Low battery warning
- 85 dB alarm
- Meets UL2034 standard.
- Uses 9 V battery, included
- Dimensione: 8 x 3 x 7 inches












